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<span>Subparts</span> </div> </a> <ul id="toc-Subparts-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-MPEG-4_Audio_Object_Types" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#MPEG-4_Audio_Object_Types"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>MPEG-4 Audio Object Types</span> </div> </a> <ul id="toc-MPEG-4_Audio_Object_Types-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Audio_Profiles" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Audio_Profiles"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Audio Profiles</span> </div> </a> <ul id="toc-Audio_Profiles-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Audio_storage_and_transport" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Audio_storage_and_transport"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Audio storage and transport</span> </div> </a> <ul id="toc-Audio_storage_and_transport-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bifurcation_in_the_AAC_technical_standard" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bifurcation_in_the_AAC_technical_standard"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Bifurcation in the AAC technical standard</span> </div> </a> <ul id="toc-Bifurcation_in_the_AAC_technical_standard-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-HE-AAC" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#HE-AAC"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>HE-AAC</span> </div> </a> <ul id="toc-HE-AAC-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-AAC-SSR" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#AAC-SSR"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>AAC-SSR</span> </div> </a> <button aria-controls="toc-AAC-SSR-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle AAC-SSR subsection</span> </button> <ul id="toc-AAC-SSR-sublist" class="vector-toc-list"> <li id="toc-Why_AAC-SSR_was_introduced" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Why_AAC-SSR_was_introduced"> <div class="vector-toc-text"> <span class="vector-toc-numb">8.1</span> <span>Why AAC-SSR was introduced</span> </div> </a> <ul id="toc-Why_AAC-SSR_was_introduced-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-BSAC" class="vector-toc-list-item vector-toc-level-1 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</div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Third part of the ISO/IEC MPEG-4 standard</div> <p><b>MPEG-4 Part 3</b> or <b>MPEG-4 Audio</b> (formally <a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>/<a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a> 14496-3) is the third part of the <a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>/<a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a> <a href="/wiki/MPEG-4" title="MPEG-4">MPEG-4</a> international standard developed by <a href="/wiki/Moving_Picture_Experts_Group" title="Moving Picture Experts Group">Moving Picture Experts Group</a>.<sup id="cite_ref-mpeg4audio-iso_1-0" class="reference"><a href="#cite_note-mpeg4audio-iso-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> It specifies <a href="/wiki/Audio_coding" class="mw-redirect" title="Audio coding">audio coding</a> methods. The first version of ISO/IEC 14496-3 was published in 1999.<sup id="cite_ref-mpeg4audio-iso-1999_2-0" class="reference"><a href="#cite_note-mpeg4audio-iso-1999-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>The MPEG-4 Part 3 consists of a variety of audio coding technologies – from <a href="/wiki/Lossy_compression" title="Lossy compression">lossy</a> <a href="/wiki/Speech_coding" title="Speech coding">speech coding</a> (<a href="/wiki/Harmonic_Vector_Excitation_Coding" title="Harmonic Vector Excitation Coding">HVXC</a>, <a href="/wiki/CELP" class="mw-redirect" title="CELP">CELP</a>), general audio coding (<a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC</a>, <a href="/wiki/TwinVQ" title="TwinVQ">TwinVQ</a>, BSAC), <a href="/wiki/Lossless_compression" title="Lossless compression">lossless</a> audio compression (<a href="/wiki/MPEG-4_SLS" title="MPEG-4 SLS">MPEG-4 SLS</a>, <a href="/wiki/Audio_Lossless_Coding" title="Audio Lossless Coding">Audio Lossless Coding</a>, <a href="/wiki/Direct_Stream_Transfer#DST" class="mw-redirect" title="Direct Stream Transfer">MPEG-4 DST</a>), a <a href="/wiki/Text_to_speech" class="mw-redirect" title="Text to speech">Text-To-Speech</a> Interface (TTSI), <a href="/wiki/MPEG-4_Structured_Audio" title="MPEG-4 Structured Audio">Structured Audio</a> (using <a href="/wiki/Structured_Audio_Orchestra_Language" title="Structured Audio Orchestra Language">SAOL</a>, SASL, <a href="/wiki/MIDI" title="MIDI">MIDI</a>) and many additional audio synthesis and coding techniques.<sup id="cite_ref-mpeg4audio-licensing_3-0" class="reference"><a href="#cite_note-mpeg4audio-licensing-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-profiles_4-0" class="reference"><a href="#cite_note-mpeg4audio-profiles-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-scalability_5-0" class="reference"><a href="#cite_note-mpeg4audio-scalability-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg-audio-faq_6-0" class="reference"><a href="#cite_note-mpeg-audio-faq-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-version2_7-0" class="reference"><a href="#cite_note-mpeg4audio-version2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-version2-overview_8-0" class="reference"><a href="#cite_note-mpeg4audio-version2-overview-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio1_9-0" class="reference"><a href="#cite_note-mpeg4audio1-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-purnhagen_10-0" class="reference"><a href="#cite_note-mpeg4audio-purnhagen-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4overview_11-0" class="reference"><a href="#cite_note-mpeg4overview-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>MPEG-4 Audio does not target a single application such as real-time telephony or high-quality audio compression. It applies to every application which requires the use of advanced sound compression, synthesis, manipulation, or playback. MPEG-4 Audio is a new type of audio standard that integrates numerous different types of audio coding: natural sound and synthetic sound, low bitrate delivery and high-quality delivery, speech and music, complex soundtracks and simple ones, traditional content and interactive content.<sup id="cite_ref-mpeg4audio-version2_7-1" class="reference"><a href="#cite_note-mpeg4audio-version2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Versions">Versions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=1" title="Edit section: Versions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable sortable"> <caption>MPEG-4 Audio versions and editions<sup id="cite_ref-mpeg-standards_12-0" class="reference"><a href="#cite_note-mpeg-standards-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Edition </th> <th>Release date </th> <th>Latest amendment </th> <th>Standard </th> <th>Description </th></tr> <tr> <td>First edition </td> <td>1999 </td> <td>2001 </td> <td>ISO/IEC 14496-3:1999<sup id="cite_ref-mpeg4audio-iso-1999_2-1" class="reference"><a href="#cite_note-mpeg4audio-iso-1999-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </td> <td>also known as "MPEG-4 Audio Version 1" </td></tr> <tr> <td> </td> <td> </td> <td>2000 </td> <td>ISO/IEC 14496-3:1999/Amd 1:2000<sup id="cite_ref-mpeg4audio-iso-2-amd_13-0" class="reference"><a href="#cite_note-mpeg4audio-iso-2-amd-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </td> <td>also known as "MPEG-4 Audio Version 2", an Amendment to first edition<sup id="cite_ref-mpeg4audio-version2_7-2" class="reference"><a href="#cite_note-mpeg4audio-version2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-version2-overview_8-1" class="reference"><a href="#cite_note-mpeg4audio-version2-overview-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>Second edition </td> <td>2001 </td> <td>2005 </td> <td>ISO/IEC 14496-3:2001<sup id="cite_ref-mpeg4audio-2001_14-0" class="reference"><a href="#cite_note-mpeg4audio-2001-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </td> <td> </td></tr> <tr> <td>Third edition </td> <td>2005 </td> <td>2008 </td> <td>ISO/IEC 14496-3:2005<sup id="cite_ref-mpeg4audio-2005_15-0" class="reference"><a href="#cite_note-mpeg4audio-2005-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </td> <td> </td></tr> <tr> <td>Fourth edition </td> <td>2009 </td> <td>2015 and under development<sup id="cite_ref-mpeg-standards_12-1" class="reference"><a href="#cite_note-mpeg-standards-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </td> <td>ISO/IEC 14496-3:2009<sup id="cite_ref-mpeg4audio-iso_1-1" class="reference"><a href="#cite_note-mpeg4audio-iso-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-version4-2009_16-0" class="reference"><a href="#cite_note-mpeg4audio-version4-2009-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </td> <td> </td></tr> <tr> <td>Fifth edition </td> <td>2019 </td> <td> </td> <td>ISO/IEC 14496-3:2019<sup id="cite_ref-mpeg4audio-version5-2019_17-0" class="reference"><a href="#cite_note-mpeg4audio-version5-2019-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </td> <td>Current version </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Subparts">Subparts</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=2" title="Edit section: Subparts"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>MPEG-4 Part 3 contains following subparts:<sup id="cite_ref-mpeg4audio-version4-2009_16-1" class="reference"><a href="#cite_note-mpeg4audio-version4-2009-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <ul><li>Subpart 1: Main (list of Audio Object Types, Profiles, Levels, interface to ISO/IEC 14496-1, MPEG-4 Audio transport stream, etc.)</li> <li>Subpart 2: Speech coding – <a href="/wiki/HVXC" class="mw-redirect" title="HVXC">HVXC</a> (Harmonic Vector eXcitation Coding)</li> <li>Subpart 3: Speech coding – <a href="/wiki/Code_Excited_Linear_Prediction" class="mw-redirect" title="Code Excited Linear Prediction">CELP</a> (Code Excited Linear Prediction)</li> <li>Subpart 4: General Audio Coding (GA) (Time/Frequency Coding) – <a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC</a>, <a href="/wiki/TwinVQ" title="TwinVQ">TwinVQ</a>, BSAC</li> <li>Subpart 5: <a href="/wiki/MPEG-4_Structured_Audio" title="MPEG-4 Structured Audio">Structured Audio</a> (SA)</li> <li>Subpart 6: <a href="/wiki/Text_to_speech" class="mw-redirect" title="Text to speech">Text to Speech</a> Interface (TTSI)</li> <li>Subpart 7: Parametric Audio Coding – <a href="/wiki/Harmonic_and_Individual_Lines_and_Noise" title="Harmonic and Individual Lines and Noise">HILN</a> (Harmonic and Individual Line plus Noise)</li> <li>Subpart 8: Technical description of parametric coding for high quality audio (SSC, <a href="/wiki/Parametric_Stereo" class="mw-redirect" title="Parametric Stereo">Parametric Stereo</a>)</li> <li>Subpart 9: <a href="/wiki/MPEG-1" title="MPEG-1">MPEG-1</a>/<a href="/wiki/MPEG-2" title="MPEG-2">MPEG-2</a> Audio in MPEG-4</li> <li>Subpart 10: Technical description of lossless coding of oversampled audio (MPEG-4 DST – <a href="/wiki/Direct_Stream_Transfer#DST" class="mw-redirect" title="Direct Stream Transfer">Direct Stream Transfer</a>)</li> <li>Subpart 11: <a href="/wiki/Audio_Lossless_Coding" title="Audio Lossless Coding">Audio Lossless Coding</a> (ALS)</li> <li>Subpart 12: <a href="/wiki/Scalable_Lossless_Coding" class="mw-redirect" title="Scalable Lossless Coding">Scalable Lossless Coding</a> (SLS)</li></ul> <div class="mw-heading mw-heading2"><h2 id="MPEG-4_Audio_Object_Types">MPEG-4 Audio Object Types</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=3" title="Edit section: MPEG-4 Audio Object Types"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>MPEG-4 Audio includes a system for handling a diverse group of audio formats in a uniform manner. Each format is assigned a unique Audio Object Type to represent it.<sup id="cite_ref-mpeg4audio-multimediawiki_18-0" class="reference"><a href="#cite_note-mpeg4audio-multimediawiki-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-fhg-mpeg4audio_19-0" class="reference"><a href="#cite_note-fhg-mpeg4audio-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> Object Type is used to distinguish between different coding methods. It directly determines the MPEG-4 tool subset required to decode a specific object. The MPEG-4 profiles are based on the object types and each profile supports a different list of object types.<sup id="cite_ref-fhg-mpeg4audio_19-1" class="reference"><a href="#cite_note-fhg-mpeg4audio-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable sortable"> <caption>MPEG-4 Audio Object Types<sup id="cite_ref-mpeg4audio-version2_7-3" class="reference"><a href="#cite_note-mpeg4audio-version2-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio1_9-1" class="reference"><a href="#cite_note-mpeg4audio1-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-multimediawiki_18-1" class="reference"><a href="#cite_note-mpeg4audio-multimediawiki-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio1-draft_20-0" class="reference"><a href="#cite_note-mpeg4audio1-draft-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-n7016_21-0" class="reference"><a href="#cite_note-mpeg4audio-n7016-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Object Type ID </th> <th>Audio Object Type </th> <th>First public release date </th> <th>Description </th></tr> <tr> <td>1 </td> <td>AAC Main </td> <td>1999 </td> <td>contains AAC LC </td></tr> <tr> <td>2 </td> <td><a href="/wiki/AAC-LC" class="mw-redirect" title="AAC-LC">AAC LC</a> (Low Complexity) </td> <td>1999 </td> <td>Used in the "AAC Profile". MPEG-4 AAC LC Audio Object Type is based on the MPEG-2 Part 7 Low Complexity profile (LC) combined with Perceptual Noise Substitution (PNS) (defined in MPEG-4 Part 3 Subpart 4).<sup id="cite_ref-mpeg4audio-profiles_4-1" class="reference"><a href="#cite_note-mpeg4audio-profiles-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-mpeg2audio_22-0" class="reference"><a href="#cite_note-mpeg4audio-mpeg2audio-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>3 </td> <td>AAC SSR (Scalable Sample Rate) </td> <td>1999 </td> <td>MPEG-4 AAC SSR Audio Object Type is based on the MPEG-2 Part 7 Scalable Sampling Rate profile (SSR) combined with Perceptual Noise Substitution (PNS) (defined in MPEG-4 Part 3 Subpart 4).<sup id="cite_ref-mpeg4audio-profiles_4-2" class="reference"><a href="#cite_note-mpeg4audio-profiles-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-mpeg2audio_22-1" class="reference"><a href="#cite_note-mpeg4audio-mpeg2audio-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>4 </td> <td>AAC LTP (<a href="/wiki/Long_Term_Prediction" class="mw-redirect" title="Long Term Prediction">Long Term Prediction</a>) </td> <td>1999 </td> <td>contains AAC LC </td></tr> <tr> <td>5 </td> <td>SBR (<a href="/wiki/Spectral_Band_Replication" class="mw-redirect" title="Spectral Band Replication">Spectral Band Replication</a>) </td> <td>2003<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> </td> <td>used with AAC LC in the "High Efficiency AAC Profile" (<a href="/wiki/HE-AAC" class="mw-redirect" title="HE-AAC">HE-AAC</a> v1) </td></tr> <tr> <td>6 </td> <td>AAC Scalable </td> <td>1999 </td> <td> </td></tr> <tr> <td>7 </td> <td><a href="/wiki/TwinVQ" title="TwinVQ">TwinVQ</a> </td> <td>1999 </td> <td>audio coding at very low bitrates </td></tr> <tr> <td>8 </td> <td>CELP (<a href="/wiki/Code_Excited_Linear_Prediction" class="mw-redirect" title="Code Excited Linear Prediction">Code Excited Linear Prediction</a>) </td> <td>1999 </td> <td>speech coding </td></tr> <tr> <td>9 </td> <td><a href="/wiki/HVXC" class="mw-redirect" title="HVXC">HVXC</a> (Harmonic Vector eXcitation Coding) </td> <td>1999 </td> <td>speech coding </td></tr> <tr> <td>10 </td> <td>(Reserved) </td> <td> </td> <td> </td></tr> <tr> <td>11 </td> <td>(Reserved) </td> <td> </td> <td> </td></tr> <tr> <td>12 </td> <td>TTSI (<a href="/wiki/Text_to_speech" class="mw-redirect" title="Text to speech">Text-To-Speech</a> Interface) </td> <td>1999 </td> <td> </td></tr> <tr> <td>13 </td> <td>Main synthesis </td> <td>1999 </td> <td>contains '<a href="/wiki/Table-lookup_synthesis" class="mw-redirect" title="Table-lookup synthesis">wavetable</a>' <a href="/wiki/Sample-based_synthesis" title="Sample-based synthesis">sample-based synthesis</a><sup id="cite_ref-scheirerray1998_24-0" class="reference"><a href="#cite_note-scheirerray1998-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> and Algorithmic Synthesis and Audio Effects </td></tr> <tr> <td>14 </td> <td>'<a href="/wiki/Table-lookup_synthesis" class="mw-redirect" title="Table-lookup synthesis">wavetable</a>' <a href="/wiki/Sample-based_synthesis" title="Sample-based synthesis">sample-based synthesis</a> </td> <td>1999 </td> <td>based on <a href="/wiki/SoundFont" title="SoundFont">SoundFont</a> and <a href="/wiki/DownLoadable_Sounds" class="mw-redirect" title="DownLoadable Sounds">DownLoadable Sounds</a>,<sup id="cite_ref-scheirerray1998_24-1" class="reference"><a href="#cite_note-scheirerray1998-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> contains General MIDI </td></tr> <tr> <td>15 </td> <td><a href="/wiki/General_MIDI" title="General MIDI">General MIDI</a> </td> <td>1999 </td> <td> </td></tr> <tr> <td>16 </td> <td>Algorithmic Synthesis and Audio Effects </td> <td>1999 </td> <td> </td></tr> <tr> <td>17 </td> <td>ER AAC LC </td> <td>2000 </td> <td><a href="/wiki/Advanced_Audio_Coding#Error_Resilient_(ER)_AAC" title="Advanced Audio Coding">Error Resilient</a> </td></tr> <tr> <td>18 </td> <td>(Reserved ) </td> <td> </td> <td> </td></tr> <tr> <td>19 </td> <td>ER AAC LTP </td> <td>2000 </td> <td>Error Resilient </td></tr> <tr> <td>20 </td> <td>ER AAC Scalable </td> <td>2000 </td> <td>Error Resilient </td></tr> <tr> <td>21 </td> <td>ER TwinVQ </td> <td>2000 </td> <td>Error Resilient </td></tr> <tr> <td>22 </td> <td>ER BSAC (Bit-Sliced Arithmetic Coding) </td> <td>2000 </td> <td>It is also known as "Fine Granule Audio" or fine grain scalability tool. It is used in combination with the AAC coding tools and replaces the noiseless coding and the bitstream formatting of MPEG-4 Version 1 GA coder. Error Resilient </td></tr> <tr> <td>23 </td> <td>ER <a href="/wiki/AAC-LD" title="AAC-LD">AAC LD</a> (Low Delay) </td> <td>2000 </td> <td>Error Resilient, used with CELP, ER CELP, HVXC, ER HVXC and TTSI in the "Low Delay Profile", (commonly used for real-time conversation applications) </td></tr> <tr> <td>24 </td> <td>ER CELP </td> <td>2000 </td> <td>Error Resilient </td></tr> <tr> <td>25 </td> <td>ER HVXC </td> <td>2000 </td> <td>Error Resilient </td></tr> <tr> <td>26 </td> <td>ER <a href="/wiki/Harmonic_and_Individual_Lines_and_Noise" title="Harmonic and Individual Lines and Noise">HILN</a> (Harmonic and Individual Lines plus Noise) </td> <td>2000 </td> <td>Error Resilient </td></tr> <tr> <td>27 </td> <td>ER Parametric </td> <td>2000 </td> <td>Error Resilient </td></tr> <tr> <td>28 </td> <td>SSC (SinuSoidal Coding) </td> <td>2004<sup id="cite_ref-parametric_25-0" class="reference"><a href="#cite_note-parametric-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-parametric-draft_26-0" class="reference"><a href="#cite_note-parametric-draft-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> </td> <td> </td></tr> <tr> <td>29 </td> <td>PS (<a href="/wiki/Parametric_Stereo" class="mw-redirect" title="Parametric Stereo">Parametric Stereo</a>) </td> <td>2004<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> and 2006<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-als_29-0" class="reference"><a href="#cite_note-als-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> </td> <td>used with AAC LC and SBR in the "HE-AAC v2 Profile". PS coding tool was defined in 2004 and Object Type defined in 2006. </td></tr> <tr> <td>30 </td> <td><a href="/wiki/MPEG_Surround" title="MPEG Surround">MPEG Surround</a> </td> <td>2007<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </td> <td>also known as MPEG Spatial Audio Coding (SAC), it is a type of spatial audio coding<sup id="cite_ref-mpeg-surround-tutorial_31-0" class="reference"><a href="#cite_note-mpeg-surround-tutorial-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> (MPEG Surround was also defined in ISO/IEC 23003-1 in 2007<sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup>) </td></tr> <tr> <td>31 </td> <td>(ESCAPE) </td> <td> </td> <td> </td></tr> <tr> <td>32 </td> <td><a href="/wiki/MP1" class="mw-redirect" title="MP1">MPEG-1/2 Layer-1</a> </td> <td>2005<sup id="cite_ref-mpeg1-2_34-0" class="reference"><a href="#cite_note-mpeg1-2-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> </td> <td> </td></tr> <tr> <td>33 </td> <td><a href="/wiki/MPEG-1_Audio_Layer_II" title="MPEG-1 Audio Layer II">MPEG-1/2 Layer-2</a> </td> <td>2005<sup id="cite_ref-mpeg1-2_34-1" class="reference"><a href="#cite_note-mpeg1-2-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> </td> <td> </td></tr> <tr> <td>34 </td> <td><a href="/wiki/MP3" title="MP3">MPEG-1/2 Layer-3</a> </td> <td>2005<sup id="cite_ref-mpeg1-2_34-2" class="reference"><a href="#cite_note-mpeg1-2-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> </td> <td>also known as "MP3onMP4" </td></tr> <tr> <td>35 </td> <td>DST (<a href="/wiki/Direct_Stream_Transfer#DST" class="mw-redirect" title="Direct Stream Transfer">Direct Stream Transfer</a>) </td> <td>2005<sup id="cite_ref-oversampled_35-0" class="reference"><a href="#cite_note-oversampled-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> </td> <td>lossless audio coding, used on Super Audio CD </td></tr> <tr> <td>36 </td> <td>ALS (<a href="/wiki/Audio_Lossless_Coding" title="Audio Lossless Coding">Audio Lossless Coding</a>) </td> <td>2006<sup id="cite_ref-als_29-1" class="reference"><a href="#cite_note-als-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> </td> <td>lossless audio coding </td></tr> <tr> <td>37 </td> <td>SLS (<a href="/wiki/Scalable_Lossless_Coding" class="mw-redirect" title="Scalable Lossless Coding">Scalable Lossless Coding</a>) </td> <td>2006<sup id="cite_ref-sls_36-0" class="reference"><a href="#cite_note-sls-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> </td> <td>two-layer audio coding with lossless layer and lossy General Audio core/layer (e.g. AAC) </td></tr> <tr> <td>38 </td> <td>SLS non-core </td> <td>2006 </td> <td>lossless audio coding without lossy General Audio core/layer (e.g. AAC) </td></tr> <tr> <td>39 </td> <td>ER AAC ELD (Enhanced Low Delay) </td> <td>2008<sup id="cite_ref-aac-eld_37-0" class="reference"><a href="#cite_note-aac-eld-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </td> <td>Error Resilient </td></tr> <tr> <td>40 </td> <td>SMR (Symbolic Music Representation) Simple </td> <td>2008 </td> <td>note: Symbolic Music Representation is also the <a href="/wiki/MPEG-4" title="MPEG-4">MPEG-4</a> Part 23 standard (ISO/IEC 14496-23:2008)<sup id="cite_ref-smr_38-0" class="reference"><a href="#cite_note-smr-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-smr-part4_39-0" class="reference"><a href="#cite_note-smr-part4-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>41 </td> <td>SMR Main </td> <td>2008 </td> <td> </td></tr> <tr> <td>42 </td> <td>USAC (<a href="/wiki/Unified_Speech_and_Audio_Coding" title="Unified Speech and Audio Coding">Unified Speech and Audio Coding</a>) </td> <td>2012 </td> <td>Unified Speech and audio Coding is defined in <a href="/wiki/MPEG-D" title="MPEG-D">MPEG-D</a> Part 3 (ISO/IEC 23003-3:2012)<sup id="cite_ref-mpeg-d-usac_40-0" class="reference"><a href="#cite_note-mpeg-d-usac-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>43 </td> <td>SAOC (Spatial Audio Object Coding) </td> <td>2010<sup id="cite_ref-saoc_41-0" class="reference"><a href="#cite_note-saoc-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-saoc-doc_42-0" class="reference"><a href="#cite_note-saoc-doc-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> </td> <td>note: Spatial Audio Object Coding is also the <a href="/wiki/MPEG-D" title="MPEG-D">MPEG-D</a> Part 2 standard (ISO/IEC 23003-2:2010)<sup id="cite_ref-mpeg-d-saoc_43-0" class="reference"><a href="#cite_note-mpeg-d-saoc-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>44 </td> <td>LD MPEG Surround </td> <td>2010<sup id="cite_ref-44" class="reference"><a href="#cite_note-44"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup> </td> <td>This object type conveys Low Delay MPEG Surround Coding side information (that was defined in MPEG-D Part 2 – ISO/IEC 23003-2<sup id="cite_ref-mpeg-d-saoc_43-1" class="reference"><a href="#cite_note-mpeg-d-saoc-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup>) in the MPEG-4 Audio framework. </td></tr> <tr> <td>45 </td> <td>SAOC-DE </td> <td>2013 </td> <td>Spatial Audio Object Coding Dialogue Enhancement </td></tr> <tr> <td>46 </td> <td>Audio Sync </td> <td>2015 </td> <td>The audio synchronization tool provides capability of synchronizing multiple contents in multiple devices. </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Audio_Profiles">Audio Profiles</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=4" title="Edit section: Audio Profiles"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:HE-AAC_and_HE-AAC_v2.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/HE-AAC_and_HE-AAC_v2.svg/300px-HE-AAC_and_HE-AAC_v2.svg.png" decoding="async" width="300" height="191" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/HE-AAC_and_HE-AAC_v2.svg/450px-HE-AAC_and_HE-AAC_v2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/43/HE-AAC_and_HE-AAC_v2.svg/600px-HE-AAC_and_HE-AAC_v2.svg.png 2x" data-file-width="522" data-file-height="333" /></a><figcaption>Hierarchical structure of AAC Profile, HE-AAC Profile and HE-AAC v2 Profile, and compatibility between them. The HE-AAC Profile decoder is fully capable of decoding any AAC Profile stream. Similarly the HE-AAC v2 decoder can handle all HE-AAC Profile streams as well as all AAC Profile streams. Based on the MPEG-4 Part 3 technical specification.<sup id="cite_ref-mpeg4audio-n7016_21-1" class="reference"><a href="#cite_note-mpeg4audio-n7016-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup></figcaption></figure> <p>The MPEG-4 Audio standard defines several profiles. These profiles are based on the object types and each profile supports different list of object types. Each profile may also have several levels, which limit some parameters of the tools present in a profile. These parameters usually are the sampling rate and the number of audio channels decoded at the same time. </p> <table class="wikitable sortable" style="min-width:600px"> <caption>MPEG-4 Audio Profiles<sup id="cite_ref-fhg-mpeg4audio_19-2" class="reference"><a href="#cite_note-fhg-mpeg4audio-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-mpeg4audio-n7016_21-2" class="reference"><a href="#cite_note-mpeg4audio-n7016-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th width="20%">Audio Profile </th> <th width="50%">Audio Object Types </th> <th width="10%">First public release date </th></tr> <tr> <td>AAC Profile </td> <td>AAC LC </td> <td>2003 </td></tr> <tr> <td>High Efficiency AAC Profile </td> <td>AAC LC, SBR </td> <td>2003 </td></tr> <tr> <td>HE-AAC v2 Profile </td> <td>AAC LC, SBR, PS </td> <td>2006 </td></tr> <tr> <td>Main Audio Profile </td> <td>AAC Main, AAC LC, AAC SSR, AAC LTP, AAC Scalable, TwinVQ, CELP, HVXC, TTSI, Main synthesis </td> <td>1999 </td></tr> <tr> <td>Scalable Audio Profile </td> <td>AAC LC, AAC LTP, AAC Scalable, TwinVQ, CELP, HVXC, TTSI </td> <td>1999 </td></tr> <tr> <td>Speech Audio Profile </td> <td><a href="/wiki/CELP" class="mw-redirect" title="CELP">CELP</a>, <a href="/wiki/HVXC" class="mw-redirect" title="HVXC">HVXC</a>, TTSI </td> <td>1999 </td></tr> <tr> <td>Synthetic Audio Profile </td> <td>TTSI, Main synthesis </td> <td>1999 </td></tr> <tr> <td>High Quality Audio Profile </td> <td>AAC LC, AAC LTP, AAC Scalable, CELP, ER AAC LC, ER AAC LTP, ER AAC Scalable, ER CELP </td> <td>2000 </td></tr> <tr> <td>Low Delay Audio Profile </td> <td>CELP, HVXC, TTSI, ER AAC LD, ER CELP, ER HVXC </td> <td>2000 </td></tr> <tr> <td>Natural Audio Profile </td> <td>AAC Main, AAC LC, AAC SSR, AAC LTP, AAC Scalable, TwinVQ, CELP, HVXC, TTSI, ER AAC LC, ER AAC LTP, ER AAC Scalable, ER TwinVQ, ER BSAC, ER AAC LD, ER CELP, ER HVXC, ER HILN, ER Parametric </td> <td>2000 </td></tr> <tr> <td>Mobile Audio Internetworking Profile </td> <td>ER AAC LC, ER AAC Scalable, ER TwinVQ, ER BSAC, ER AAC LD </td> <td>2000 </td></tr> <tr> <td>HD-AAC Profile </td> <td>AAC LC, SLS<sup id="cite_ref-45" class="reference"><a href="#cite_note-45"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup> </td> <td>2009<sup id="cite_ref-46" class="reference"><a href="#cite_note-46"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>ALS Simple Profile </td> <td>ALS </td> <td>2010<sup id="cite_ref-saoc-doc_42-1" class="reference"><a href="#cite_note-saoc-doc-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-47" class="reference"><a href="#cite_note-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Audio_storage_and_transport">Audio storage and transport</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=5" title="Edit section: Audio storage and transport"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable sortable" width="100%"> <caption>Multiplex, storage and transmission formats for MPEG-4 Audio<sup id="cite_ref-mpeg4audio-version4-2009_16-2" class="reference"><a href="#cite_note-mpeg4audio-version4-2009-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th width="10%"> </th> <th width="20%">Standard </th> <th width="50%">Description </th></tr> <tr> <td>Multiplex </td> <td>ISO/IEC 14496-1 </td> <td>MPEG-4 Multiplex scheme (M4Mux)<sup id="cite_ref-48" class="reference"><a href="#cite_note-48"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td>Multiplex </td> <td>ISO/IEC 14496-3 </td> <td>Low Overhead Audio Transport Multiplex (LATM) </td></tr> <tr> <td>Storage </td> <td>ISO/IEC 14496-3 (informative) </td> <td>Audio Data Interchange Format (ADIF) – only for AAC </td></tr> <tr> <td>Storage </td> <td>ISO/IEC 14496-12 </td> <td>MPEG-4 file format (<a href="/wiki/MPEG-4_Part_14" class="mw-redirect" title="MPEG-4 Part 14">MP4</a>) / <a href="/wiki/ISO_base_media_file_format" title="ISO base media file format">ISO base media file format</a> </td></tr> <tr> <td>Transmission </td> <td>ISO/IEC 14496-3 (informative) </td> <td>Audio Data Transport Stream (ADTS) – only for AAC </td></tr> <tr> <td>Transmission </td> <td>ISO/IEC 14496-3 </td> <td>Low Overhead Audio Stream (LOAS), based on LATM </td></tr></tbody></table> <p>There is no standard for transport of <a href="/wiki/Elementary_stream" class="mw-redirect" title="Elementary stream">elementary streams</a> over a channel, because the broad range of MPEG-4 applications have delivery requirements that are too wide to easily characterize with a single solution. </p><p>The capabilities of a transport layer and the communication between transport, multiplex, and demultiplex functions are described in the <a href="/wiki/Delivery_Multimedia_Integration_Framework" title="Delivery Multimedia Integration Framework">Delivery Multimedia Integration Framework</a> (DMIF) in ISO/IEC 14496-6.<sup id="cite_ref-mpeg4audio-version4-2009_16-3" class="reference"><a href="#cite_note-mpeg4audio-version4-2009-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> A wide variety of delivery mechanisms exist below this interface, e.g., <a href="/wiki/MPEG_transport_stream" title="MPEG transport stream">MPEG transport stream</a>, <a href="/wiki/Real-time_Transport_Protocol" title="Real-time Transport Protocol">Real-time Transport Protocol</a> (RTP), etc. </p><p>Transport in Real-time Transport Protocol is defined in RFC 3016 (RTP Payload Format for MPEG-4 Audio/Visual Streams), RFC 3640 (RTP Payload Format for Transport of MPEG-4 Elementary Streams), RFC 4281 (The Codecs Parameter for "Bucket" Media Types) and RFC 4337 (MIME Type Registration for MPEG-4). </p><p>LATM and LOAS were defined for natural audio applications, which do not require sophisticated object-based coding or other functions provided by MPEG-4 Systems. </p> <div class="mw-heading mw-heading2"><h2 id="Bifurcation_in_the_AAC_technical_standard">Bifurcation in the AAC technical standard</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=6" title="Edit section: Bifurcation in the AAC technical standard"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">Advanced Audio Coding</a></div> <p>The <a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">Advanced Audio Coding</a> in MPEG-4 Part 3 (MPEG-4 Audio) Subpart 4 was enhanced relative to the previous standard <a href="/wiki/MPEG-2" title="MPEG-2">MPEG-2</a> Part 7 (Advanced Audio Coding), in order to provide better <a href="/wiki/Sound_quality" title="Sound quality">sound quality</a> for a given encoding bitrate. </p><p>It is assumed that any Part 3 and Part 7 differences will be ironed out by the ISO standards body in the near future to avoid the possibility of future bitstream incompatibilities. At present there are no known player or codec incompatibilities due to the newness of the standard. </p><p>The MPEG-2 Part 7 standard (Advanced Audio Coding) was first published in 1997 and offers three default profiles:<sup id="cite_ref-iso13818-7-2004-pdf_49-0" class="reference"><a href="#cite_note-iso13818-7-2004-pdf-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-iso13818-7-1997_50-0" class="reference"><a href="#cite_note-iso13818-7-1997-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> Low Complexity profile (LC), Main profile and Scalable Sampling Rate profile (SSR). </p><p>The MPEG-4 Part 3 Subpart 4 (General Audio Coding) combined the profiles from MPEG-2 Part 7 with Perceptual Noise Substitution (PNS) and defined them as Audio Object Types (AAC LC, AAC Main, AAC SSR).<sup id="cite_ref-mpeg4audio-profiles_4-3" class="reference"><a href="#cite_note-mpeg4audio-profiles-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="HE-AAC">HE-AAC</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=7" title="Edit section: HE-AAC"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/HE-AAC" class="mw-redirect" title="HE-AAC">HE-AAC</a></div> <p><a href="/wiki/High-Efficiency_Advanced_Audio_Coding" title="High-Efficiency Advanced Audio Coding">High-Efficiency Advanced Audio Coding</a> is an extension of <a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC LC</a> using <a href="/wiki/Spectral_band_replication" title="Spectral band replication">spectral band replication</a> (SBR), and <a href="/wiki/Parametric_Stereo" class="mw-redirect" title="Parametric Stereo">Parametric Stereo</a> (PS). It is designed to increase coding efficiency at low bitrates by using partial parametric representation of audio. </p> <div class="mw-heading mw-heading2"><h2 id="AAC-SSR">AAC-SSR</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=8" title="Edit section: AAC-SSR"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>AAC Scalable Sample Rate</b> was introduced by Sony to the MPEG-2 Part 7 and MPEG-4 Part 3 standards.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="There should be a reference to Sony's work on this standard. (October 2009)">citation needed</span></a></i>]</sup> It was first published in ISO/IEC 13818-7, Part 7: Advanced Audio Coding (AAC) in 1997.<sup id="cite_ref-iso13818-7-2004-pdf_49-1" class="reference"><a href="#cite_note-iso13818-7-2004-pdf-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-iso13818-7-1997_50-1" class="reference"><a href="#cite_note-iso13818-7-1997-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> The audio signal is first split into 4 bands using a 4 band <a href="/wiki/Polyphase_quadrature_filter" title="Polyphase quadrature filter">polyphase quadrature filter</a> bank. Then these 4 bands are further split using <a href="/wiki/Modified_discrete_cosine_transform" title="Modified discrete cosine transform">MDCTs</a> with a size <i>k</i> of 32 or 256 samples. This is similar to normal AAC LC which uses MDCTs with a size <i>k</i> of 128 or 1024 directly on the audio signal. </p><p>The advantage of this technique is that short block switching can be done separately for every <a href="/wiki/PQF" class="mw-redirect" title="PQF">PQF</a> band. So high frequencies can be encoded using a short block to enhance temporal resolution, low frequencies can be still encoded with high spectral resolution. However, due to aliasing between the 4 PQF bands, coding efficiency around (1,2,3) * fs/8 is worse than with normal MPEG-4 AAC LC.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2013)">citation needed</span></a></i>]</sup> </p><p>MPEG-4 AAC-SSR is very similar to <a href="/wiki/ATRAC" title="ATRAC">ATRAC</a> and <a href="/wiki/ATRAC-3" class="mw-redirect" title="ATRAC-3">ATRAC-3</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Why_AAC-SSR_was_introduced">Why AAC-SSR was introduced</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=9" title="Edit section: Why AAC-SSR was introduced"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The idea behind AAC-SSR was not only the advantage listed above, but also the possibility of reducing the data rate by removing 1, 2 or 3 of the upper PQF bands. A very simple bitstream splitter can remove these bands and thus reduce the bitrate and sample rate. </p><p>Example: </p> <ul><li>4 subbands: bitrate = 128 kbit/s, sample rate = 48 kHz, f_lowpass = 20 kHz</li> <li>3 subbands: bitrate ~ 120 kbit/s, sample rate = 48 kHz, f_lowpass = 18 kHz</li> <li>2 subbands: bitrate ~ 100 kbit/s, sample rate = 24 kHz, f_lowpass = 12 kHz</li> <li>1 subband: bitrate ~ 65 kbit/s, sample rate = 12 kHz, f_lowpass = 6 kHz</li></ul> <p><b>Note:</b> although possible, the resulting quality is much worse than typical for this bitrate. So for normal 64 kbit/s AAC LC a bandwidth of 14–16 kHz is achieved by using intensity stereo and reduced NMRs. This degrades audible quality less than transmitting 6 kHz bandwidth with perfect quality. </p> <div class="mw-heading mw-heading2"><h2 id="BSAC">BSAC</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=10" title="Edit section: BSAC"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>Bit Sliced Arithmetic Coding</b> is an MPEG-4 standard (ISO/IEC 14496-3 subpart 4) for scalable audio coding. BSAC uses an alternative noiseless coding to AAC, with the rest of the processing being identical to AAC. This support for scalability allows for nearly transparent sound quality at 64 kbit/s and <a href="/wiki/Graceful_degradation" class="mw-redirect" title="Graceful degradation">graceful degradation</a> at lower bit rates. BSAC coding is best performed in the range of 40 kbit/s to 64 kbit/s, though it operates in the range of 16 kbit/s to 64 kbit/s. The AAC-BSAC codec is used in <a href="/wiki/Digital_Multimedia_Broadcasting" class="mw-redirect" title="Digital Multimedia Broadcasting">Digital Multimedia Broadcasting (DMB)</a> applications. </p> <div class="mw-heading mw-heading2"><h2 id="Licensing">Licensing</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=11" title="Edit section: Licensing"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 2002, the MPEG-4 Audio Licensing Committee selected the Via Licensing Corporation as the Licensing Administrator for the MPEG-4 Audio <a href="/wiki/Patent_pool" title="Patent pool">patent pool</a>.<sup id="cite_ref-mpeg4audio-licensing_3-1" class="reference"><a href="#cite_note-mpeg4audio-licensing-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-reuters_51-0" class="reference"><a href="#cite_note-reuters-51"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-via-businesswire_52-0" class="reference"><a href="#cite_note-via-businesswire-52"><span class="cite-bracket">[</span>52<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=12" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/TwinVQ" title="TwinVQ">TwinVQ</a> – one of the object types defined in MPEG-4 Audio version 1</li> <li><a href="/wiki/MPEG-4_Part_2" title="MPEG-4 Part 2">MPEG-4 Part 2</a></li> <li><a href="/wiki/MPEG-4_Part_14" class="mw-redirect" title="MPEG-4 Part 14">MPEG-4 Part 14</a> container format (MP4)</li> <li><a href="/wiki/Digital_rights_management" title="Digital rights management">Digital rights management</a></li> <li><a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">Advanced Audio Coding</a> (AAC)</li> <li><a href="/wiki/ISO/IEC_JTC_1/SC_29" title="ISO/IEC JTC 1/SC 29">ISO/IEC JTC 1/SC 29</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=13" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-mpeg4audio-iso-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-mpeg4audio-iso_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-mpeg4audio-iso_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and 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Archived from <a rel="nofollow" class="external text" href="http://kikaku.itscj.ipsj.or.jp/sc29/open/29view/29n5462t.doc">the original</a> <span class="cs1-format">(DOC)</span> on 2014-05-12<span class="reference-accessdate">. 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Archived from <a rel="nofollow" class="external text" href="http://mpeg.chiariglione.org/technologies/mpeg-d/mpd-mps/index.htm">the original</a> on 2010-04-30<span class="reference-accessdate">. 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Archived from <a rel="nofollow" class="external text" href="http://www.chiariglione.org/mpeg/technologies/mpd-mps/index.htm">the original</a> on 2008-03-24<span class="reference-accessdate">. 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Retrieved <span class="nowrap">2009-10-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Symbolic+Music+Representation+conformance%2C+ISO%2FIEC+14496-4%3A2004%2FAmd+29%3A2008&rft.pub=ISO&rft.date=2008&rft.au=ISO&rft_id=http%3A%2F%2Fwww.iso.org%2Fiso%2Fcatalogue_detail.htm%3Fcsnumber%3D46593&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-mpeg-d-usac-40"><span class="mw-cite-backlink"><b><a href="#cite_ref-mpeg-d-usac_40-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO2012" class="citation web cs1">ISO (2012). <a rel="nofollow" class="external text" href="http://www.iso.org/standard/57464.html">"ISO/IEC 23003-3:2012 - Information technology -- MPEG audio technologies -- Part 3: Unified speech and audio coding"</a>. ISO<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-11-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ISO%2FIEC+23003-3%3A2012+-+Information+technology+--+MPEG+audio+technologies+--+Part+3%3A+Unified+speech+and+audio+coding&rft.pub=ISO&rft.date=2012&rft.au=ISO&rft_id=http%3A%2F%2Fwww.iso.org%2Fstandard%2F57464.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-saoc-41"><span class="mw-cite-backlink"><b><a href="#cite_ref-saoc_41-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO2009" class="citation web cs1">ISO (2009). <a rel="nofollow" class="external text" href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=54838">"ISO/IEC 14496-3:2009/Amd 2:2010, ALS simple profile and transport of SAOC"</a>. ISO<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-10-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ISO%2FIEC+14496-3%3A2009%2FAmd+2%3A2010%2C+ALS+simple+profile+and+transport+of+SAOC&rft.pub=ISO&rft.date=2009&rft.au=ISO&rft_id=http%3A%2F%2Fwww.iso.org%2Fiso%2Fiso_catalogue%2Fcatalogue_tc%2Fcatalogue_detail.htm%3Fcsnumber%3D54838&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-saoc-doc-42"><span class="mw-cite-backlink">^ <a href="#cite_ref-saoc-doc_42-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-saoc-doc_42-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO/IEC_JTC1/SC29/WG112009" class="citation cs2">ISO/IEC JTC1/SC29/WG11 (2009-07-03), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140729155217/http://kikaku.itscj.ipsj.or.jp/sc29/open/29view/29n10483t.doc"><i>ISO/IEC 14496-3:200X/PDAM 2 – ALS Simple Profile and Transport of SAOC, N10826</i></a>, archived from <a rel="nofollow" class="external text" href="http://kikaku.itscj.ipsj.or.jp/sc29/open/29view/29n10483t.doc">the original</a> <span class="cs1-format">(DOC)</span> on 2014-07-29<span class="reference-accessdate">, retrieved <span class="nowrap">2009-10-13</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=ISO%2FIEC+14496-3%3A200X%2FPDAM+2+%E2%80%93+ALS+Simple+Profile+and+Transport+of+SAOC%2C+N10826&rft.date=2009-07-03&rft.au=ISO%2FIEC+JTC1%2FSC29%2FWG11&rft_id=http%3A%2F%2Fkikaku.itscj.ipsj.or.jp%2Fsc29%2Fopen%2F29view%2F29n10483t.doc&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Citation" title="Template:Citation">citation</a>}}</code>: CS1 maint: numeric names: authors list (<a href="/wiki/Category:CS1_maint:_numeric_names:_authors_list" title="Category:CS1 maint: numeric names: authors list">link</a>)</span></span> </li> <li id="cite_note-mpeg-d-saoc-43"><span class="mw-cite-backlink">^ <a href="#cite_ref-mpeg-d-saoc_43-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-mpeg-d-saoc_43-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO2010" class="citation web cs1">ISO (2010). <a rel="nofollow" class="external text" href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=51827">"ISO/IEC 23003-2:2010 - Information technology -- MPEG audio technologies -- Part 2: Spatial Audio Object Coding (SAOC)"</a>. ISO<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-12-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ISO%2FIEC+23003-2%3A2010+-+Information+technology+--+MPEG+audio+technologies+--+Part+2%3A+Spatial+Audio+Object+Coding+%28SAOC%29&rft.pub=ISO&rft.date=2010&rft.au=ISO&rft_id=http%3A%2F%2Fwww.iso.org%2Fiso%2Fiso_catalogue%2Fcatalogue_tc%2Fcatalogue_detail.htm%3Fcsnumber%3D51827&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-44"><span class="mw-cite-backlink"><b><a href="#cite_ref-44">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://www.iis.fraunhofer.de/content/dam/iis/de/doc/ame/conference/AES-128-Convention_ANewParametricStereo-AndMultichannelExtension_AES8099.pdf"><i>AES Convention Paper 8099 – A new parametric stereo and Multi Channel Extension for MPEG-4 Enhanced Low Delay AAC (AAC-ELD)</i></a> <span class="cs1-format">(PDF)</span><span class="reference-accessdate">, retrieved <span class="nowrap">2019-11-07</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=AES+Convention+Paper+8099+%E2%80%93+A+new+parametric+stereo+and+Multi+Channel+Extension+for+MPEG-4+Enhanced+Low+Delay+AAC+%28AAC-ELD%29&rft_id=https%3A%2F%2Fwww.iis.fraunhofer.de%2Fcontent%2Fdam%2Fiis%2Fde%2Fdoc%2Fame%2Fconference%2FAES-128-Convention_ANewParametricStereo-AndMultichannelExtension_AES8099.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-45"><span class="mw-cite-backlink"><b><a href="#cite_ref-45">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO/IEC_JTC1/SC29/WG112008" class="citation cs2">ISO/IEC JTC1/SC29/WG11 (2008-10-17), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140512223049/http://kikaku.itscj.ipsj.or.jp/sc29/open/29view/29n9813t.doc"><i>ISO/IEC 14496-3:2005/PDAM 10:200X HD-AAC profile, MPEG2008/N10188</i></a>, archived from <a rel="nofollow" class="external text" href="http://kikaku.itscj.ipsj.or.jp/sc29/open/29view/29n9813t.doc">the original</a> <span class="cs1-format">(DOC)</span> on 2014-05-12<span class="reference-accessdate">, retrieved <span class="nowrap">2009-10-19</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=ISO%2FIEC+14496-3%3A2005%2FPDAM+10%3A200X+HD-AAC+profile%2C+MPEG2008%2FN10188&rft.date=2008-10-17&rft.au=ISO%2FIEC+JTC1%2FSC29%2FWG11&rft_id=http%3A%2F%2Fkikaku.itscj.ipsj.or.jp%2Fsc29%2Fopen%2F29view%2F29n9813t.doc&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Citation" title="Template:Citation">citation</a>}}</code>: CS1 maint: numeric names: authors list (<a href="/wiki/Category:CS1_maint:_numeric_names:_authors_list" title="Category:CS1 maint: numeric names: authors list">link</a>)</span></span> </li> <li id="cite_note-46"><span class="mw-cite-backlink"><b><a href="#cite_ref-46">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO2009" class="citation web cs1">ISO (2009-09-11). <a rel="nofollow" class="external text" href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=53944">"ISO/IEC 14496-3:2009/Amd 1:2009 - HD-AAC profile and MPEG Surround signaling"</a>. ISO<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-10-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ISO%2FIEC+14496-3%3A2009%2FAmd+1%3A2009+-+HD-AAC+profile+and+MPEG+Surround+signaling&rft.pub=ISO&rft.date=2009-09-11&rft.au=ISO&rft_id=http%3A%2F%2Fwww.iso.org%2Fiso%2Fiso_catalogue%2Fcatalogue_tc%2Fcatalogue_detail.htm%3Fcsnumber%3D53944&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-47"><span class="mw-cite-backlink"><b><a href="#cite_ref-47">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO2009" class="citation web cs1">ISO (2009-10-08). <a rel="nofollow" class="external text" href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=54838">"ISO/IEC 14496-3:2009/Amd 2:2010 - ALS simple profile and transport of SAOC"</a>. ISO<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-10-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ISO%2FIEC+14496-3%3A2009%2FAmd+2%3A2010+-+ALS+simple+profile+and+transport+of+SAOC&rft.pub=ISO&rft.date=2009-10-08&rft.au=ISO&rft_id=http%3A%2F%2Fwww.iso.org%2Fiso%2Fiso_catalogue%2Fcatalogue_tc%2Fcatalogue_detail.htm%3Fcsnumber%3D54838&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-48"><span class="mw-cite-backlink"><b><a href="#cite_ref-48">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO2004" class="citation cs2">ISO (2004-11-15), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110614010701/http://webstore.iec.ch/preview/info_isoiec14496-1%7Bed3.0%7Den.pdf"><i>ISO/IEC 14496-1, Third edition 2004-11-15, Part 1: Systems</i></a> <span class="cs1-format">(PDF)</span>, ISO, archived from <a rel="nofollow" class="external text" href="http://webstore.iec.ch/preview/info_isoiec14496-1{ed3.0}en.pdf">the original</a> <span class="cs1-format">(PDF)</span> on June 14, 2011<span class="reference-accessdate">, retrieved <span class="nowrap">2009-10-14</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=ISO%2FIEC+14496-1%2C+Third+edition+2004-11-15%2C+Part+1%3A+Systems&rft.pub=ISO&rft.date=2004-11-15&rft.au=ISO&rft_id=http%3A%2F%2Fwebstore.iec.ch%2Fpreview%2Finfo_isoiec14496-1%7Bed3.0%7Den.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-iso13818-7-2004-pdf-49"><span class="mw-cite-backlink">^ <a href="#cite_ref-iso13818-7-2004-pdf_49-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-iso13818-7-2004-pdf_49-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO2004" class="citation cs2">ISO (2004-10-15), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110713115817/http://jongyeob.com/moniwiki/pds/upload/13818-7.pdf"><i>ISO/IEC 13818-7, Third edition, Part 7 – Advanced Audio Coding (AAC)</i></a> <span class="cs1-format">(PDF)</span>, p. 32, archived from <a rel="nofollow" class="external text" href="http://jongyeob.com/moniwiki/pds/upload/13818-7.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2011-07-13<span class="reference-accessdate">, retrieved <span class="nowrap">2009-10-19</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=ISO%2FIEC+13818-7%2C+Third+edition%2C+Part+7+%E2%80%93+Advanced+Audio+Coding+%28AAC%29&rft.pages=32&rft.date=2004-10-15&rft.au=ISO&rft_id=http%3A%2F%2Fjongyeob.com%2Fmoniwiki%2Fpds%2Fupload%2F13818-7.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-iso13818-7-1997-50"><span class="mw-cite-backlink">^ <a href="#cite_ref-iso13818-7-1997_50-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-iso13818-7-1997_50-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFISO1997" class="citation web cs1">ISO (1997). <a rel="nofollow" class="external text" href="http://www.iso.org/iso/iso_catalogue/catalogue_ics/catalogue_detail_ics.htm?csnumber=25040">"ISO/IEC 13818-7:1997, Information technology -- Generic coding of moving pictures and associated audio information -- Part 7: Advanced Audio Coding (AAC)"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2009-10-19</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ISO%2FIEC+13818-7%3A1997%2C+Information+technology+--+Generic+coding+of+moving+pictures+and+associated+audio+information+--+Part+7%3A+Advanced+Audio+Coding+%28AAC%29&rft.date=1997&rft.au=ISO&rft_id=http%3A%2F%2Fwww.iso.org%2Fiso%2Fiso_catalogue%2Fcatalogue_ics%2Fcatalogue_detail_ics.htm%3Fcsnumber%3D25040&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> <li id="cite_note-reuters-51"><span class="mw-cite-backlink"><b><a href="#cite_ref-reuters_51-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBusiness_Wire2009" class="citation web cs1">Business Wire (2009-01-05). <a rel="nofollow" class="external text" href="https://archive.today/20130104140933/http://www.reuters.com/article/pressRelease/idUS137433+05-Jan-2009+BW20090105">"Via Licensing Announces MPEG-4 SLS Patent Pool License"</a>. Reuters. Archived from <a rel="nofollow" class="external text" href="https://www.reuters.com/article/pressRelease/idUS137433+05-Jan-2009+BW20090105">the original</a> on 2013-01-04<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-10-09</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Via+Licensing+Announces+MPEG-4+SLS+Patent+Pool+License&rft.pub=Reuters&rft.date=2009-01-05&rft.au=Business+Wire&rft_id=https%3A%2F%2Fwww.reuters.com%2Farticle%2FpressRelease%2FidUS137433%2B05-Jan-2009%2BBW20090105&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span> <span class="cs1-visible-error citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: </span><span class="cs1-visible-error citation-comment"><code class="cs1-code">|author=</code> has generic name (<a href="/wiki/Help:CS1_errors#generic_name" title="Help:CS1 errors">help</a>)</span></span> </li> <li id="cite_note-via-businesswire-52"><span class="mw-cite-backlink"><b><a href="#cite_ref-via-businesswire_52-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVia_Licensing_Corporation2009" class="citation web cs1">Via Licensing Corporation (2009-05-12). <a rel="nofollow" class="external text" href="http://www.businesswire.com/portal/site/home/permalink/?ndmViewId=news_view&newsId=20090512006643&newsLang=en">"Via Licensing Announces the Availability of an MPEG-4 SLS Joint Patent Licensing Program"</a>. Business Wire<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-10-09</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Via+Licensing+Announces+the+Availability+of+an+MPEG-4+SLS+Joint+Patent+Licensing+Program&rft.pub=Business+Wire&rft.date=2009-05-12&rft.au=Via+Licensing+Corporation&rft_id=http%3A%2F%2Fwww.businesswire.com%2Fportal%2Fsite%2Fhome%2Fpermalink%2F%3FndmViewId%3Dnews_view%26newsId%3D20090512006643%26newsLang%3Den&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMPEG-4+Part+3" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=MPEG-4_Part_3&action=edit&section=14" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20050403091158/http://www.apple.com/mpeg4/aac/">Apple: MPEG-4: AAC</a></li> <li><a rel="nofollow" class="external text" href="https://wiki.videolan.org/Advanced_Audio_Coding/">"AAC" (VideoLAN WIKI)</a></li> <li><a rel="nofollow" class="external text" href="http://www.ebu.ch/CMSimages/en/tec_doc_t3296_tcm6-10497.pdf">EBU subjective listening tests on low-bitrate audio codecs</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070216071801/http://www.ebu.ch/CMSimages/en/tec_doc_t3296_tcm6-10497.pdf">Archived</a> 2007-02-16 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li> <li><a rel="nofollow" class="external text" href="https://archive.today/20130129161538/http://www.musicgoal.com/stations/audio-aacp/">AAC radio stations</a> – Online radio stations in AAC format</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20040827034854/http://www.tuner2.com/">Tuner2</a> – Directory of radio stations in AAC+ format at various bitrates</li> <li><a rel="nofollow" class="external text" href="http://www.radiofeeds.co.uk/other.asp">RadioFeeds UK & Ireland</a> – Page containing plenty of terrestrial stations webcasting in AAC+ format.</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090826174538/http://www.rjamorim.com/test/64test/results.html">Results of 64 kbit/s Listening Test</a> A page comparing codecs including HE-AAC @64 kbit/s by listening tests. (Page is offline)</li> <li><a rel="nofollow" class="external text" href="https://mpeg.chiariglione.org/">Official MPEG web site</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222">RFC <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc3016">3016</a> – RTP Payload Format for MPEG-4 Audio/Visual Streams</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222">RFC <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc3640">3640</a> – RTP Payload Format for Transport of MPEG-4 Elementary Streams</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222">RFC <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc4281">4281</a> – The Codecs Parameter for "Bucket" Media Types</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222">RFC <a rel="nofollow" class="external text" href="https://datatracker.ietf.org/doc/html/rfc4337">4337</a> – MIME Type Registration for MPEG-4</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist 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scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Compression_formats" title="Template:Compression formats"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Compression_formats" title="Template talk:Compression formats"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Compression_formats" title="Special:EditPage/Template:Compression formats"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Multimedia_compression_and_container_formats462" style="font-size:114%;margin:0 4em"><a href="/wiki/Multimedia" title="Multimedia">Multimedia</a> <a href="/wiki/Data_compression" title="Data compression">compression</a> and <a href="/wiki/Container_format_(computing)" class="mw-redirect" title="Container format (computing)">container</a> formats</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Video_coding_format" title="Video coding format">Video<br />compression</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a>, <br /><a href="/wiki/Moving_Picture_Experts_Group" title="Moving Picture Experts Group">MPEG</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DV_(video_format)" title="DV (video format)">DV</a></li> <li><a href="/wiki/Motion_JPEG" title="Motion JPEG">MJPEG</a></li> <li><a href="/wiki/Motion_JPEG_2000" title="Motion JPEG 2000">Motion JPEG 2000</a></li> <li><a href="/wiki/MPEG-1" title="MPEG-1">MPEG-1</a></li> <li><a href="/wiki/MPEG-2" title="MPEG-2">MPEG-2</a> <ul><li><a href="/wiki/H.262/MPEG-2_Part_2" title="H.262/MPEG-2 Part 2">Part 2</a></li></ul></li> <li><a href="/wiki/MPEG-4" title="MPEG-4">MPEG-4</a> <ul><li><a href="/wiki/MPEG-4_Part_2" title="MPEG-4 Part 2">Part 2 / ASP</a></li> <li><a href="/wiki/H.264/MPEG-4_AVC" class="mw-redirect" title="H.264/MPEG-4 AVC">Part 10 / AVC</a></li> <li><a href="/wiki/MPEG-4_IVC" class="mw-redirect" title="MPEG-4 IVC">Part 33 / IVC</a></li></ul></li> <li><a href="/wiki/MPEG-H" title="MPEG-H">MPEG-H</a> <ul><li><a href="/wiki/High_Efficiency_Video_Coding" title="High Efficiency Video Coding">Part 2 / HEVC</a></li></ul></li> <li><a href="/w/index.php?title=MPEG-I&action=edit&redlink=1" class="new" title="MPEG-I (page does not exist)">MPEG-I</a> <ul><li><a href="/wiki/Versatile_Video_Coding" title="Versatile Video Coding">Part 3 / VVC</a></li></ul></li> <li><a href="/wiki/MPEG-5" class="mw-redirect" title="MPEG-5">MPEG-5</a> <ul><li><a href="/wiki/Essential_Video_Coding" title="Essential Video Coding">Part 1 / EVC</a></li> <li><a href="/wiki/LCEVC" title="LCEVC">Part 2 / LCEVC</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ITU-T" title="ITU-T">ITU-T</a>, <a href="/wiki/Video_Coding_Experts_Group" title="Video Coding Experts Group">VCEG</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/H.120" title="H.120">H.120</a></li> <li><a href="/wiki/H.261" title="H.261">H.261</a></li> <li><a href="/wiki/H.262/MPEG-2_Part_2" title="H.262/MPEG-2 Part 2">H.262</a></li> <li><a href="/wiki/H.263" title="H.263">H.263</a></li> <li><a href="/wiki/Advanced_Video_Coding" title="Advanced Video Coding">H.264 / AVC</a></li> <li><a href="/wiki/High_Efficiency_Video_Coding" title="High Efficiency Video Coding">H.265 / HEVC</a></li> <li><a href="/wiki/Versatile_Video_Coding" title="Versatile Video Coding">H.266 / VVC</a></li> <li><a href="/w/index.php?title=H.267&action=edit&redlink=1" class="new" title="H.267 (page does not exist)">H.267 / Enhanced Coding Model</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Society_of_Motion_Picture_and_Television_Engineers" title="Society of Motion Picture and Television Engineers">SMPTE</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/VC-1" title="VC-1">VC-1</a></li> <li><a href="/wiki/Dirac_(video_compression_format)" title="Dirac (video compression format)">VC-2</a></li> <li><a href="/wiki/Avid_DNxHD" title="Avid DNxHD">VC-3</a></li> <li><a href="/wiki/CineForm" title="CineForm">VC-5</a></li> <li><a href="/wiki/VC-6" title="VC-6">VC-6</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/On2_Technologies" title="On2 Technologies">TrueMotion</a> and AOMedia</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/On2_Technologies#TrueMotion_S" title="On2 Technologies">TrueMotion S</a></li> <li><a href="/wiki/VP3" title="VP3">VP3</a></li> <li><a href="/wiki/VP6" title="VP6">VP6</a></li> <li><a href="/wiki/VP7" class="mw-redirect" title="VP7">VP7</a></li> <li><a href="/wiki/VP8" title="VP8">VP8</a></li> <li><a href="/wiki/VP9" title="VP9">VP9</a></li> <li><a href="/wiki/AV1" title="AV1">AV1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Chinese Standard</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Audio_Video_Standard#First_generation" title="Audio Video Standard">AVS1 P2/AVS+</a>(GB/T 20090.2/16)</li> <li><a href="/wiki/Audio_Video_Standard#Second_generation" title="Audio Video Standard">AVS2 P2</a>(GB/T 33475.2,GY/T 299.1) <ul><li>HDR Vivid(GY/T 358)</li></ul></li> <li>AVS3 P2(GY/T 368)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apple_Video" title="Apple Video">Apple Video</a></li> <li><a href="/wiki/Audio_Video_Standard" title="Audio Video Standard">AVS</a></li> <li><a href="/wiki/Bink_Video" title="Bink Video">Bink</a></li> <li><a href="/wiki/Cinepak" title="Cinepak">Cinepak</a></li> <li><a href="/wiki/Daala" title="Daala">Daala</a></li> <li><a href="/wiki/Digital_Video_Interactive" title="Digital Video Interactive">DVI</a></li> <li><a href="/wiki/FFV1" title="FFV1">FFV1</a></li> <li><a href="/wiki/Huffyuv" title="Huffyuv">Huffyuv</a></li> <li><a href="/wiki/Indeo" title="Indeo">Indeo</a></li> <li><a href="/wiki/Lagarith" title="Lagarith">Lagarith</a></li> <li><a href="/wiki/Microsoft_Video_1" title="Microsoft Video 1">Microsoft Video 1</a></li> <li><a href="/wiki/MSU_Lossless_Video_Codec" title="MSU Lossless Video Codec">MSU Lossless</a></li> <li><a href="/wiki/OMS_Video" title="OMS Video">OMS Video</a></li> <li><a href="/wiki/Pixlet" title="Pixlet">Pixlet</a></li> <li><a href="/wiki/Apple_ProRes" title="Apple ProRes">ProRes</a> <ul><li><a href="/wiki/ProRes_422" class="mw-redirect" title="ProRes 422">422</a></li> <li><a href="/wiki/ProRes_4444" class="mw-redirect" title="ProRes 4444">4444</a></li></ul></li> <li>QuickTime <ul><li><a href="/wiki/QuickTime_Animation" title="QuickTime Animation">Animation</a></li> <li><a href="/wiki/QuickTime_Graphics" title="QuickTime Graphics">Graphics</a></li></ul></li> <li><a href="/wiki/RealVideo" title="RealVideo">RealVideo</a></li> <li><a href="/wiki/RTVideo" title="RTVideo">RTVideo</a></li> <li><a href="/wiki/SheerVideo" title="SheerVideo">SheerVideo</a></li> <li><a href="/wiki/Smacker_video" title="Smacker video">Smacker</a></li> <li><a href="/wiki/Sorenson_Media" title="Sorenson Media">Sorenson Video/Spark</a></li> <li><a href="/wiki/Theora" title="Theora">Theora</a></li> <li><a href="/wiki/Thor_(video_codec)" title="Thor (video codec)">Thor</a></li> <li><a href="/wiki/Ut_Video_Codec_Suite" title="Ut Video Codec Suite">Ut</a></li> <li><a href="/wiki/Windows_Media_Video" title="Windows Media Video">WMV</a></li> <li><a href="/wiki/RatDVD" title="RatDVD">XEB</a></li> <li><a href="/wiki/YULS" title="YULS">YULS</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Audio_coding_format" title="Audio coding format">Audio<br />compression</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a>,<br /> <a href="/wiki/Moving_Picture_Experts_Group" title="Moving Picture Experts Group">MPEG</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG-1_Audio_Layer_II" title="MPEG-1 Audio Layer II">MPEG-1 Layer II</a> <ul><li><a href="/wiki/MPEG_Multichannel" title="MPEG Multichannel">Multichannel</a></li></ul></li> <li><a href="/wiki/MPEG-1_Audio_Layer_I" title="MPEG-1 Audio Layer I">MPEG-1 Layer I</a></li> <li><a href="/wiki/MP3" title="MP3">MPEG-1 Layer III (MP3)</a></li> <li><a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC</a> <ul><li><a href="/wiki/High-Efficiency_Advanced_Audio_Coding" title="High-Efficiency Advanced Audio Coding">HE-AAC</a></li> <li><a href="/wiki/AAC-LD" title="AAC-LD">AAC-LD</a></li></ul></li> <li><a href="/wiki/MPEG_Surround" title="MPEG Surround">MPEG Surround</a></li> <li><a href="/wiki/Audio_Lossless_Coding" title="Audio Lossless Coding">MPEG-4 ALS</a></li> <li><a href="/wiki/MPEG-4_SLS" title="MPEG-4 SLS">MPEG-4 SLS</a></li> <li><a href="/wiki/Super_Audio_CD#DST" title="Super Audio CD">MPEG-4 DST</a></li> <li><a href="/wiki/Harmonic_Vector_Excitation_Coding" title="Harmonic Vector Excitation Coding">MPEG-4 HVXC</a></li> <li><a href="/wiki/Code-excited_linear_prediction" title="Code-excited linear prediction">MPEG-4 CELP</a></li> <li><a href="/wiki/Unified_Speech_and_Audio_Coding" title="Unified Speech and Audio Coding">MPEG-D USAC</a></li> <li><a href="/wiki/MPEG-H_3D_Audio" title="MPEG-H 3D Audio">MPEG-H 3D Audio</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ITU-T" title="ITU-T">ITU-T</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/G.711" title="G.711">G.711</a> <ul><li><a href="/wiki/A-law_algorithm" title="A-law algorithm">A-law</a></li> <li><a href="/wiki/%CE%9C-law_algorithm" title="Μ-law algorithm">µ-law</a></li></ul></li> <li><a href="/wiki/G.718" title="G.718">G.718</a></li> <li><a href="/wiki/G.719" title="G.719">G.719</a></li> <li><a href="/wiki/G.722" title="G.722">G.722</a></li> <li><a href="/wiki/G.722.1" title="G.722.1">G.722.1</a></li> <li><a href="/wiki/Adaptive_Multi-Rate_Wideband" title="Adaptive Multi-Rate Wideband">G.722.2</a></li> <li><a href="/wiki/G.723" title="G.723">G.723</a></li> <li><a href="/wiki/G.723.1" title="G.723.1">G.723.1</a></li> <li><a href="/wiki/G.726" title="G.726">G.726</a></li> <li><a href="/wiki/G.728" title="G.728">G.728</a></li> <li><a href="/wiki/G.729" title="G.729">G.729</a></li> <li><a href="/wiki/G.729.1" title="G.729.1">G.729.1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Internet_Engineering_Task_Force" title="Internet Engineering Task Force">IETF</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Opus_(audio_format)" title="Opus (audio format)">Opus</a></li> <li><a href="/wiki/Internet_Low_Bitrate_Codec" title="Internet Low Bitrate Codec">iLBC</a></li> <li><a href="/wiki/Speex" title="Speex">Speex</a></li> <li><a href="/wiki/Vorbis" title="Vorbis">Vorbis</a></li> <li><a href="/wiki/FLAC" title="FLAC">FLAC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/3GPP" title="3GPP">3GPP</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Adaptive_Multi-Rate_audio_codec" title="Adaptive Multi-Rate audio codec">AMR</a></li> <li><a href="/wiki/Adaptive_Multi-Rate_Wideband" title="Adaptive Multi-Rate Wideband">AMR-WB</a></li> <li><a href="/wiki/Extended_Adaptive_Multi-Rate_%E2%80%93_Wideband" title="Extended Adaptive Multi-Rate – Wideband">AMR-WB+</a></li> <li><a href="/wiki/Enhanced_Variable_Rate_Codec" title="Enhanced Variable Rate Codec">EVRC</a></li> <li><a href="/wiki/Enhanced_Variable_Rate_Codec_B" title="Enhanced Variable Rate Codec B">EVRC-B</a></li> <li><a href="/wiki/Enhanced_Voice_Services" title="Enhanced Voice Services">EVS</a></li> <li><a href="/wiki/Half_Rate" title="Half Rate">GSM-HR</a></li> <li><a href="/wiki/Full_Rate" title="Full Rate">GSM-FR</a></li> <li><a href="/wiki/Enhanced_full_rate" title="Enhanced full rate">GSM-EFR</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ETSI" class="mw-redirect" title="ETSI">ETSI</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dolby_Digital" title="Dolby Digital">AC-3</a></li> <li><a href="/wiki/Dolby_AC-4" title="Dolby AC-4">AC-4</a></li> <li><a href="/wiki/DTS_(sound_system)" class="mw-redirect" title="DTS (sound system)">DTS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Bluetooth_Special_Interest_Group" title="Bluetooth Special Interest Group">Bluetooth SIG</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/SBC_(codec)" title="SBC (codec)">SBC</a></li> <li><a href="/wiki/LC3_(codec)" title="LC3 (codec)">LC3</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Chinese Standard</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Audio_Video_Standard#First_generation" title="Audio Video Standard">AVS1 P10</a>(GB/T 20090.10)</li> <li><a href="/wiki/Audio_Video_Standard#Second_generation" title="Audio Video Standard">AVS2 P3</a>(GB/T 33475.3) <ul><li><a href="/w/index.php?title=Audio_Vivid&action=edit&redlink=1" class="new" title="Audio Vivid (page does not exist)">Audio Vivid</a>(GY/T 363)</li></ul></li> <li><a href="/wiki/Dynamic_Resolution_Adaptation" title="Dynamic Resolution Adaptation">DRA</a>(GB/T 22726)</li> <li>ExAC(SJ/T 11299.4)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Algebraic_code-excited_linear_prediction" title="Algebraic code-excited linear prediction">ACELP</a></li> <li><a href="/wiki/Apple_Lossless_Audio_Codec" title="Apple Lossless Audio Codec">ALAC</a></li> <li><a href="/wiki/Asao_(codec)" title="Asao (codec)">Asao</a></li> <li><a href="/wiki/Adaptive_Transform_Acoustic_Coding" class="mw-redirect" title="Adaptive Transform Acoustic Coding">ATRAC</a></li> <li><a href="/wiki/CELT" title="CELT">CELT</a></li> <li><a href="/wiki/Codec_2" title="Codec 2">Codec 2</a></li> <li><a href="/wiki/Internet_Speech_Audio_Codec" title="Internet Speech Audio Codec">iSAC</a></li> <li><a href="/wiki/Lyra_(codec)" title="Lyra (codec)">Lyra</a></li> <li><a href="/wiki/Mixed-excitation_linear_prediction" title="Mixed-excitation linear prediction">MELP</a></li> <li><a href="/wiki/Monkey%27s_Audio" title="Monkey's Audio">Monkey's Audio</a></li> <li><a href="/wiki/MT9" title="MT9">MT9</a></li> <li><a href="/wiki/Musepack" title="Musepack">Musepack</a></li> <li><a href="/wiki/OptimFROG" title="OptimFROG">OptimFROG</a></li> <li><a href="/wiki/Original_Sound_Quality" title="Original Sound Quality">OSQ</a></li> <li><a href="/wiki/Qualcomm_code-excited_linear_prediction" title="Qualcomm code-excited linear prediction">QCELP</a></li> <li><a href="/wiki/Relaxed_code-excited_linear_prediction" title="Relaxed code-excited linear prediction">RCELP</a></li> <li><a href="/wiki/RealAudio" title="RealAudio">RealAudio</a></li> <li><a href="/wiki/RTAudio" title="RTAudio">RTAudio</a></li> <li><a href="/wiki/Avid_Audio#Sound_Designer_file_formats" title="Avid Audio">SD2</a></li> <li><a href="/wiki/Shorten_file_format" class="mw-redirect" title="Shorten file format">SHN</a></li> <li><a href="/wiki/SILK" title="SILK">SILK</a></li> <li><a href="/wiki/Siren_(codec)" title="Siren (codec)">Siren</a></li> <li><a href="/wiki/Selectable_Mode_Vocoder" title="Selectable Mode Vocoder">SMV</a></li> <li><a href="/wiki/SVOPC" title="SVOPC">SVOPC</a></li> <li>TTA <ul><li>True Audio</li></ul></li> <li><a href="/wiki/TwinVQ" title="TwinVQ">TwinVQ</a></li> <li><a href="/wiki/Variable-Rate_Multimode_Wideband" title="Variable-Rate Multimode Wideband">VMR-WB</a></li> <li><a href="/wiki/Vector_sum_excited_linear_prediction" title="Vector sum excited linear prediction">VSELP</a></li> <li><a href="/wiki/WavPack" title="WavPack">WavPack</a></li> <li><a href="/wiki/Windows_Media_Audio" title="Windows Media Audio">WMA</a></li> <li><a href="/wiki/Master_Quality_Authenticated" title="Master Quality Authenticated">MQA</a></li> <li><a href="/wiki/AptX" title="AptX">aptX</a></li> <li><a href="/wiki/AptX#aptX_HD" title="AptX">aptX HD</a></li> <li><a href="/wiki/AptX#aptX_Low_Latency" title="AptX">aptX Low Latency</a></li> <li><a href="/wiki/AptX#aptX_Adaptive" title="AptX">aptX Adaptive</a></li> <li><a href="/wiki/LDAC_(codec)" title="LDAC (codec)">LDAC</a></li> <li><a href="/wiki/LHDC_(codec)" title="LHDC (codec)">LHDC</a></li> <li><a href="/wiki/LHDC_(codec)#LLAC" title="LHDC (codec)">LLAC</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Image_compression" title="Image compression">Image<br />compression</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a>, <a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/Internet_Engineering_Task_Force" title="Internet Engineering Task Force">IETF</a>, <br /><a href="/wiki/World_Wide_Web_Consortium" title="World Wide Web Consortium">W3C</a>, <a href="/wiki/ITU-T" title="ITU-T">ITU-T</a>, <a href="/wiki/Joint_Photographic_Experts_Group" title="Joint Photographic Experts Group">JPEG</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Group_4_compression" title="Group 4 compression">CCITT Group 4</a></li> <li><a href="/wiki/GIF" title="GIF">GIF</a></li> <li><a href="/wiki/High_Efficiency_Image_File_Format#HEIC:_HEVC_in_HEIF" title="High Efficiency Image File Format">HEIC / HEIF</a></li> <li><a href="/wiki/High_Efficiency_Video_Coding#Main_Still_Picture" title="High Efficiency Video Coding">HEVC</a></li> <li><a href="/wiki/JBIG" title="JBIG">JBIG</a></li> <li><a href="/wiki/JBIG2" title="JBIG2">JBIG2</a></li> <li><a href="/wiki/JPEG" title="JPEG">JPEG</a></li> <li><a href="/wiki/JPEG_2000" title="JPEG 2000">JPEG 2000</a></li> <li><a href="/wiki/JPEG-LS" class="mw-redirect" title="JPEG-LS">JPEG-LS</a></li> <li><a href="/wiki/JPEG_XL" title="JPEG XL">JPEG XL</a></li> <li><a href="/wiki/JPEG_XR" title="JPEG XR">JPEG XR</a></li> <li><a href="/wiki/JPEG_XS" title="JPEG XS">JPEG XS</a></li> <li><a href="/wiki/JPEG_XT" title="JPEG XT">JPEG XT</a></li> <li><a href="/wiki/Portable_Network_Graphics" class="mw-redirect" title="Portable Network Graphics">PNG</a></li> <li><a href="/wiki/TIFF" title="TIFF">TIFF</a></li> <li><a href="/wiki/TIFF/EP" title="TIFF/EP">TIFF/EP</a></li> <li><a href="/wiki/TIFF/IT" class="mw-redirect" title="TIFF/IT">TIFF/IT</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/APNG" title="APNG">APNG</a></li> <li><a href="/wiki/AV1" title="AV1">AV1</a></li> <li><a href="/wiki/AVIF" title="AVIF">AVIF</a></li> <li><a href="/wiki/Better_Portable_Graphics" title="Better Portable Graphics">BPG</a></li> <li><a href="/wiki/DjVu" title="DjVu">DjVu</a></li> <li><a href="/wiki/OpenEXR" title="OpenEXR">EXR</a></li> <li><a href="/wiki/Free_Lossless_Image_Format" title="Free Lossless Image Format">FLIF</a></li> <li><a href="/wiki/ICER_(file_format)" title="ICER (file format)">ICER</a></li> <li><a href="/wiki/Multiple-image_Network_Graphics" title="Multiple-image Network Graphics">MNG</a></li> <li><a href="/wiki/Progressive_Graphics_File" title="Progressive Graphics File">PGF</a></li> <li><a href="/wiki/QOI_(image_format)" title="QOI (image format)">QOI</a></li> <li><a href="/wiki/QuickTime_VR" title="QuickTime VR">QTVR</a></li> <li><a href="/wiki/Wireless_Application_Protocol_Bitmap_Format" title="Wireless Application Protocol Bitmap Format">WBMP</a></li> <li><a href="/wiki/WebP" title="WebP">WebP</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Digital_container_format" class="mw-redirect" title="Digital container format">Containers</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/International_Organization_for_Standardization" title="International Organization for Standardization">ISO</a>, <a href="/wiki/International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG_elementary_stream" title="MPEG elementary stream">MPEG-ES</a> <ul><li><a href="/wiki/Packetized_elementary_stream" title="Packetized elementary stream">MPEG-PES</a></li></ul></li> <li><a href="/wiki/MPEG_program_stream" title="MPEG program stream">MPEG-PS</a></li> <li><a href="/wiki/MPEG_transport_stream" title="MPEG transport stream">MPEG-TS</a></li> <li><a href="/wiki/ISO/IEC_base_media_file_format" class="mw-redirect" title="ISO/IEC base media file format">ISO/IEC base media file format</a></li> <li><a href="/wiki/MPEG-4_Part_14" class="mw-redirect" title="MPEG-4 Part 14">MPEG-4 Part 14</a> (MP4)</li> <li><a href="/wiki/Motion_JPEG_2000" title="Motion JPEG 2000">Motion JPEG 2000</a></li> <li><a href="/wiki/MPEG-21" title="MPEG-21">MPEG-21 Part 9</a></li> <li><a href="/wiki/MPEG_media_transport" title="MPEG media transport">MPEG media transport</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/ITU-T" title="ITU-T">ITU-T</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG-2#Systems" title="MPEG-2">H.222.0</a></li> <li><a href="/wiki/Motion_JPEG_2000" title="Motion JPEG 2000">T.802</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Internet_Engineering_Task_Force" title="Internet Engineering Task Force">IETF</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Real-time_Transport_Protocol" title="Real-time Transport Protocol">RTP</a></li> <li><a href="/wiki/Ogg" title="Ogg">Ogg</a></li> <li><a href="/wiki/Matroska" title="Matroska">Matroska</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em"><a href="/wiki/Society_of_Motion_Picture_and_Television_Engineers" title="Society of Motion Picture and Television Engineers">SMPTE</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/General_Exchange_Format" title="General Exchange Format">GXF</a></li> <li><a href="/wiki/Material_Exchange_Format" title="Material Exchange Format">MXF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:5em">Others</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/3GP_and_3G2" title="3GP and 3G2">3GP and 3G2</a></li> <li><a href="/wiki/AMV_video_format" title="AMV video format">AMV</a></li> <li><a href="/wiki/Advanced_Systems_Format" title="Advanced Systems Format">ASF</a></li> <li><a href="/wiki/Audio_Interchange_File_Format" title="Audio Interchange File Format">AIFF</a></li> <li><a href="/wiki/Audio_Video_Interleave" title="Audio Video Interleave">AVI</a></li> <li><a href="/wiki/Au_file_format" title="Au file format">AU</a></li> <li><a href="/wiki/Better_Portable_Graphics" title="Better Portable Graphics">BPG</a></li> <li><a href="/wiki/Bink_Video" title="Bink Video">Bink</a> <ul><li><a href="/wiki/Smacker_video" title="Smacker video">Smacker</a></li></ul></li> <li><a href="/wiki/BMP_file_format" title="BMP file format">BMP</a></li> <li><a href="/wiki/DivX#DivX_Media_Format_(DMF)" title="DivX">DivX Media Format</a></li> <li><a href="/wiki/Enhanced_VOB" title="Enhanced VOB">EVO</a></li> <li><a href="/wiki/Flash_Video" title="Flash Video">Flash Video</a></li> <li><a href="/wiki/High_Efficiency_Image_File_Format" title="High Efficiency Image File Format">HEIF</a></li> <li><a href="/wiki/Interchange_File_Format" title="Interchange File Format">IFF</a></li> <li><a href="/wiki/.m2ts" title=".m2ts">M2TS</a></li> <li><a href="/wiki/Matroska" title="Matroska">Matroska</a> <ul><li><a href="/wiki/WebM" title="WebM">WebM</a></li></ul></li> <li><a href="/wiki/QuickTime_File_Format" title="QuickTime File Format">QuickTime File Format</a></li> <li><a href="/wiki/RatDVD" title="RatDVD">RatDVD</a></li> <li><a href="/wiki/RealMedia" title="RealMedia">RealMedia</a></li> <li><a href="/wiki/Resource_Interchange_File_Format" title="Resource Interchange File Format">RIFF</a> <ul><li><a href="/wiki/WAV" title="WAV">WAV</a></li></ul></li> <li><a href="/wiki/MOD_and_TOD" title="MOD and TOD">MOD and TOD</a></li> <li><a href="/wiki/VOB" title="VOB">VOB, IFO and BUP</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Collaborations</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NETVC" title="NETVC">NETVC</a></li> <li><a href="/wiki/MPEG_LA" title="MPEG LA">MPEG LA</a></li> <li><a href="/wiki/Alliance_for_Open_Media" title="Alliance for Open Media">Alliance for Open Media</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Data_compression" title="Data compression">Methods</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Entropy_encoding" class="mw-redirect" title="Entropy encoding">Entropy</a> <ul><li><a href="/wiki/Arithmetic_coding" title="Arithmetic coding">Arithmetic</a></li> <li><a href="/wiki/Huffman_coding" title="Huffman coding">Huffman</a></li> <li><a href="/wiki/Modified_Huffman_coding" title="Modified Huffman coding">Modified</a></li></ul></li> <li><a href="/wiki/Linear_predictive_coding" title="Linear predictive coding">LPC</a> <ul><li><a href="/wiki/Algebraic_code-excited_linear_prediction" title="Algebraic code-excited linear prediction">ACELP</a></li> <li><a href="/wiki/Code-excited_linear_prediction" title="Code-excited linear prediction">CELP</a></li> <li><a href="/wiki/Line_spectral_pairs" title="Line spectral pairs">LSP</a></li> <li><a href="/wiki/Warped_linear_predictive_coding" title="Warped linear predictive coding">WLPC</a></li></ul></li> <li><a href="/wiki/Lossless_compression" title="Lossless compression">Lossless</a></li> <li><a href="/wiki/Lossy_compression" title="Lossy compression">Lossy</a></li> <li><a href="/wiki/LZ77_and_LZ78" title="LZ77 and LZ78">LZ</a> <ul><li><a href="/wiki/DEFLATE" class="mw-redirect" title="DEFLATE">DEFLATE</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Welch" title="Lempel–Ziv–Welch">LZW</a></li></ul></li> <li><a href="/wiki/Pulse-code_modulation" title="Pulse-code modulation">PCM</a> <ul><li><a href="/wiki/A-law_algorithm" title="A-law algorithm">A-law</a></li> <li><a href="/wiki/%CE%9C-law_algorithm" title="Μ-law algorithm">µ-law</a></li> <li><a href="/wiki/Adaptive_differential_pulse-code_modulation" title="Adaptive differential pulse-code modulation">ADPCM</a></li> <li><a href="/wiki/Differential_pulse-code_modulation" title="Differential pulse-code modulation">DPCM</a></li></ul></li> <li><a href="/wiki/Transform_coding" title="Transform coding">Transforms</a> <ul><li><a href="/wiki/Discrete_cosine_transform" title="Discrete cosine transform">DCT</a></li> <li><a href="/wiki/Fast_Fourier_transform" title="Fast Fourier transform">FFT</a></li> <li><a href="/wiki/Modified_discrete_cosine_transform" title="Modified discrete cosine transform">MDCT</a></li> <li><a href="/wiki/Wavelet" title="Wavelet">Wavelet</a> <ul><li><a href="/wiki/Daubechies_wavelet" title="Daubechies wavelet">Daubechies</a></li> <li><a href="/wiki/Discrete_wavelet_transform" title="Discrete wavelet transform">DWT</a></li></ul></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Comparison_of_audio_coding_formats" title="Comparison of audio coding formats">Comparison of audio coding formats</a></li> <li><a href="/wiki/Comparison_of_video_codecs" title="Comparison of video codecs">Comparison of video codecs</a></li> <li><a href="/wiki/List_of_codecs" title="List of codecs">List of codecs</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>See <a href="/wiki/Template:Compression_methods" title="Template:Compression methods">Compression methods</a> for techniques and <a href="/wiki/Template:Compression_software" title="Template:Compression software">Compression software</a> for codecs</div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="MPEG_(Moving_Picture_Experts_Group)397" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:MPEG" title="Template:MPEG"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:MPEG" title="Template talk:MPEG"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:MPEG" title="Special:EditPage/Template:MPEG"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="MPEG_(Moving_Picture_Experts_Group)397" style="font-size:114%;margin:0 4em"><a href="/wiki/Moving_Picture_Experts_Group" title="Moving Picture Experts Group">MPEG (Moving Picture Experts Group)</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2" style="font-size:115%;"><div> <ul><li><a href="/wiki/MPEG-1" title="MPEG-1">MPEG-1</a></li> <li><a href="/wiki/MPEG-2" title="MPEG-2">2</a></li> <li><a href="/wiki/MPEG-3" title="MPEG-3">3</a></li> <li><a href="/wiki/MPEG-4" title="MPEG-4">4</a></li> <li><a href="/wiki/MPEG-7" title="MPEG-7">7</a></li> <li><a href="/wiki/MPEG-21" title="MPEG-21">21</a></li> <li><a href="/wiki/MPEG-A" title="MPEG-A">A</a></li> <li>B</li> <li>C</li> <li><a href="/wiki/MPEG-D" title="MPEG-D">D</a></li> <li>E</li> <li><a href="/wiki/MPEG-G" title="MPEG-G">G</a></li> <li>V</li> <li>M</li> <li>U</li> <li><a href="/wiki/MPEG-H" title="MPEG-H">H</a></li> <li><a href="/w/index.php?title=MPEG-I&action=edit&redlink=1" class="new" title="MPEG-I (page does not exist)">I</a></li> <li><a href="/wiki/MPEG-5" class="mw-redirect" title="MPEG-5">5</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-1 Parts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Part 1: Systems <ul><li><a href="/wiki/MPEG_program_stream" title="MPEG program stream">Program stream</a></li></ul></li> <li>Part 2: Video <ul><li>based on <a href="/wiki/H.261" title="H.261">H.261</a></li></ul></li> <li>Part 3: Audio <ul><li><a href="/wiki/MPEG-1_Audio_Layer_I" title="MPEG-1 Audio Layer I">Layer I</a></li> <li><a href="/wiki/MPEG-1_Audio_Layer_II" title="MPEG-1 Audio Layer II">Layer II</a></li> <li><a href="/wiki/MP3" title="MP3">Layer III</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-2 Parts</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Part 1: Systems (H.222.0) <ul><li><a href="/wiki/MPEG_transport_stream" title="MPEG transport stream">Transport stream</a></li> <li><a href="/wiki/MPEG_program_stream" title="MPEG program stream">Program stream</a></li></ul></li> <li><a href="/wiki/H.262/MPEG-2_Part_2" title="H.262/MPEG-2 Part 2">Part 2: Video (H.262)</a></li> <li><a href="/wiki/MPEG-2_Part_3" title="MPEG-2 Part 3">Part 3: Audio</a> <ul><li><a href="/wiki/MPEG-1_Audio_Layer_I" title="MPEG-1 Audio Layer I">Layer I</a></li> <li><a href="/wiki/MPEG-2_Audio_Layer_II" class="mw-redirect" title="MPEG-2 Audio Layer II">Layer II</a></li> <li><a href="/wiki/MP3" title="MP3">Layer III</a></li> <li><a href="/wiki/MPEG_Multichannel" title="MPEG Multichannel">MPEG Multichannel</a></li></ul></li> <li><a href="/wiki/DSM_CC" title="DSM CC">Part 6: DSM CC</a></li> <li><a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">Part 7: Advanced Audio Coding</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-4 Parts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG-4_Part_2" title="MPEG-4 Part 2">Part 2: Video</a> <ul><li>based on <a href="/wiki/H.263" title="H.263">H.263</a></li></ul></li> <li><a class="mw-selflink selflink">Part 3: Audio</a></li> <li><a href="/wiki/Delivery_Multimedia_Integration_Framework" title="Delivery Multimedia Integration Framework">Part 6: DMIF</a></li> <li><a href="/wiki/Advanced_Video_Coding" title="Advanced Video Coding">Part 10: Advanced Video Coding (H.264)</a></li> <li><a href="/wiki/MPEG-4_Part_11" title="MPEG-4 Part 11">Part 11: Scene description</a></li> <li><a href="/wiki/ISO_base_media_file_format" title="ISO base media file format">Part 12: ISO base media file format</a></li> <li><a href="/wiki/MPEG-4_Part_14" class="mw-redirect" title="MPEG-4 Part 14">Part 14: MP4 file format</a></li> <li><a href="/wiki/MPEG-4_Part_17" title="MPEG-4 Part 17">Part 17: Streaming text format</a></li> <li><a href="/wiki/MPEG-4_Part_20" title="MPEG-4 Part 20">Part 20: LASeR</a></li> <li><a href="/wiki/Open_Font_Format" class="mw-redirect" title="Open Font Format">Part 22: Open Font Format</a></li> <li><a href="/wiki/Internet_Video_Coding" title="Internet Video Coding">Part 33: Internet Video Coding</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-7 Parts</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Description_Definition_Language" title="Description Definition Language">Part 2: Description definition language</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-21 Parts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Digital_Item" title="Digital Item">Parts 2, 3 and 9: Digital Item</a></li> <li><a href="/wiki/Rights_Expression_Language" title="Rights Expression Language">Part 5: Rights Expression Language</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-D Parts</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG_Surround" title="MPEG Surround">Part 1: MPEG Surround</a></li> <li><a href="/wiki/Unified_Speech_and_Audio_Coding" title="Unified Speech and Audio Coding">Part 3: Unified Speech and Audio Coding</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-G Parts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG-G" title="MPEG-G">Part 1: Transport and Storage of Genomic Information</a></li> <li><a href="/wiki/MPEG-G" title="MPEG-G">Part 2: Coding of Genomic Information</a></li> <li><a href="/wiki/MPEG-G" title="MPEG-G">Part 3: APIs</a></li> <li><a href="/wiki/MPEG-G" title="MPEG-G">Part 4: Reference Software</a></li> <li><a href="/wiki/MPEG-G" title="MPEG-G">Part 5: Conformance</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-H Parts</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MPEG_media_transport" title="MPEG media transport">Part 1: MPEG media transport</a></li> <li><a href="/wiki/High_Efficiency_Video_Coding" title="High Efficiency Video Coding">Part 2: High Efficiency Video Coding (H.265)</a></li> <li><a href="/wiki/MPEG-H_3D_Audio" title="MPEG-H 3D Audio">Part 3: MPEG-H 3D Audio</a></li> <li><a href="/wiki/High_Efficiency_Image_File_Format" title="High Efficiency Image File Format">Part 12: High Efficiency Image File Format</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-I Parts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Versatile_Video_Coding" title="Versatile Video Coding">Part 3: Versatile Video Coding (H.266)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">MPEG-5 Parts</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Essential_Video_Coding" title="Essential Video Coding">Part 1: Essential Video Coding</a></li> <li><a href="/wiki/LCEVC" title="LCEVC">Part 2: Low Complexity Enhancement Video Coding</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><a href="/wiki/Dynamic_Adaptive_Streaming_over_HTTP" title="Dynamic Adaptive Streaming over HTTP">MPEG-DASH</a></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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