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The WebM Project | VP9 Video Codec Summary
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This page summarizes post-release VP9 topics of interest to the WebM community.</p> </div> <p><a class="btn btn-mini btn-primary toggle-all tocbutton pull-right" href="#">Show Contents</a></p> <div class="toc"> <ul> <li><a href="#draft-vp9-bitstream-and-decoding-process-specification">Draft VP9 Bitstream and Decoding Process Specification</a><ul> <li><a href="#related-documents">Related Documents</a></li> </ul> </li> <li><a href="#vp-codec-iso-media-file-format-binding">VP Codec ISO Media File Format Binding</a></li> <li><a href="#vp9-profiles-and-levels">VP9 Profiles and Levels</a></li> <li><a href="#hdr10-metadata-handling">HDR10+ Metadata Handling</a></li> <li><a href="#acquiring-vp9-libvpx">Acquiring VP9 (libvpx)</a></li> <li><a href="#user-contributed-pages">User-Contributed Pages</a></li> <li><a href="#product-support">Product Support</a><ul> <li><a href="#microsoft-edge">Microsoft Edge</a></li> <li><a href="#webrtc">WebRTC</a></li> <li><a href="#google-chrome">Google Chrome</a></li> <li><a href="#mozilla-firefox">Mozilla Firefox</a></li> <li><a href="#vlc">VLC</a></li> <li><a href="#ffmpeg-libav">FFMpeg / Libav</a></li> </ul> </li> </ul> </div> <p><em>Last modified 2023-10-16</em></p> <h3 id="draft-vp9-bitstream-and-decoding-process-specification">Draft VP9 Bitstream and Decoding Process Specification</h3> <p>Interested parties are invited to review the current draft of the VP9 Bitstream Specification.</p> <p><strong>Note carefully:</strong></p> <ul> <li>The specification is <strong>not final</strong>.</li> <li>The team has performed one level of review internally, and now seeks external review.</li> <li>We have compiled the syntax tables into an application, and verified that <a href="https://www.google.com/search?q=argon+streams+vp9">Argon Design's test streams</a> produce output identical to <code>vpxenc</code>.</li> <li>We are particularly interested in verification of the document's textual content.</li> </ul> <p>Please direct commentary to the <em><a href="https://groups.google.com/a/webmproject.org/group/codec-devel">codec-discuss</a></em> mailing list. Note that first-time posts by unsubscribed readers are queued for moderation. You can avoid moderation by subscribing first.</p> <p><strong>Download: <a href="https://storage.googleapis.com/downloads.webmproject.org/docs/vp9/vp9-bitstream-specification-v0.7-20170222-draft.pdf">vp9-bitstream-specification-v0.7-20170222-draft.pdf</a></strong> <em>(2.37MB PDF)</em></p> <h4 id="related-documents">Related Documents</h4> <ul> <li><a href="https://tools.ietf.org/html/draft-ietf-payload-vp9">Draft: RTP Payload Format for VP9 Video</a></li> </ul> <h3 id="vp-codec-iso-media-file-format-binding">VP Codec ISO Media File Format Binding</h3> <ul> <li><a href="mp4/"><strong>Version 1.0, 2017-03-27</strong></a></li> </ul> <h3 id="vp9-profiles-and-levels">VP9 Profiles and Levels</h3> <ul> <li><strong><a href="/vp9/levels/">VP9 Levels and Decoder Testing</a></strong></li> <li><strong><a href="/vp9/profiles/">VP9 Coding Profiles</a></strong></li> </ul> <h3 id="hdr10-metadata-handling">HDR10+ Metadata Handling</h3> <p><a href="https://hdr10plus.org">HDR10+</a> metadata can be specified in the form of ITU-T T.35 terminal codes. See the <a href="/docs/container/#BlockAddID">BlockAddID</a> element in the WebM Container Guidelines. ATSC 2094-40/CTA-861.4 define one of the possible ways to specify HDR10+ metadata.</p> <h3 id="acquiring-vp9-libvpx">Acquiring VP9 (libvpx)</h3> <p>As of 2013-06-17, VP9 encode and decode support ships in the master branch of <a href="https://www.webmproject.org/code/#libvpx-vp8vp9-codec-sdk">libvpx</a>, and is enabled by default.</p> <pre><code>git clone https://chromium.googlesource.com/webm/libvpx cd libvpx git co master ## likely unnecessary ./configure make</code></pre> <p>Or consider an out-of-tree build, described in <a href="https://www.webmproject.org/code/build-prerequisites/">Build Prerequisites</a>.</p> <p>VP9 encoder options are listed in the usage output for <code>vpxenc</code>, in the section "VP9 Specific Options".</p> <h3 id="user-contributed-pages">User-Contributed Pages</h3> <ul> <li><a href="https://sites.google.com/a/webmproject.org/wiki/vp9/vp9-tips">VP9 Tips</a></li> <li><a href="https://sites.google.com/a/webmproject.org/wiki/vp9/known-issues">VP9 Known Issues</a></li> </ul> <h3 id="product-support">Product Support</h3> <h4 id="microsoft-edge">Microsoft Edge</h4> <p>Microsoft <a href="https://blogs.windows.com/msedgedev/2016/04/18/webm-vp9-and-opus-support-in-microsoft-edge/">announced</a> in April 2016 that the Edge browser will support VP9 (and Opus).</p> <h4 id="webrtc">WebRTC</h4> <p>VP9 in WebRTC <a href="https://developers.google.com/web/updates/2016/01/vp9-webrtc">became available</a> in Google Chrome 48 (stable) in January 2016, for both desktop and Android.</p> <h4 id="google-chrome">Google Chrome</h4> <p>VP9 decode support was first enabled by default in Google Chrome 29 <a href="https://www.chromium.org/getting-involved/dev-channel">Dev channel</a> (r206883) on 2013-06-26.</p> <h4 id="mozilla-firefox">Mozilla Firefox</h4> <p>VP9 decode support <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=833023">was first added to</a> Firefox Aurora ("pre-beta") nightly builds on 2013-12-06.</p> <h4 id="vlc">VLC</h4> <p>Experimental VP9 decode support was added to VLC in <a href="https://www.videolan.org/vlc/">version 2.1.2</a>.</p> <h4 id="ffmpeg-libav">FFMpeg / Libav</h4> <ul> <li>Search the <a href="https://git.videolan.org/?p=ffmpeg.git&a=search&h=HEAD&st=commit&s=libvpx"><strong>FFMpeg codebase</strong></a> for recent libvpx-related commits</li> <li>Search the <a href="https://git.libav.org/?p=libav.git&a=search&h=HEAD&st=commit&s=libvpx"><strong>Libav codebase</strong></a> for recent libvpx-related commits</li> </ul> </div> </div> <div class="row"> <div class="span10 offset1"> </div> </div> </div> <!-- /container --> </div> <footer class=""> <div class="container handfoot"> <div class="row"> <section class="span2 offset1"> <h6>About</h6> <ul> <li><a href="/about/">About WebM</a></li> <li><a href="/about/faq/">FAQ</a></li> <li><a href="/about/discuss/">Discuss</a></li> <li><a href="/about/supporters/">Supporters</a></li> </ul> <h6>More</h6> <ul> <li><a href="/tools/">Tools</a></li> <li><a href="/license/">Licenses</a></li> <li><a href="https://storage.googleapis.com/downloads.webmproject.org/releases/webm/index.html" class="no-ext">Downloads</a></li> <li><a href="/cross-license/">VP8 Cross-License</a></li> </ul> </section> <section class="span2"> <h6>Developer</h6> <ul> <li><a href="/code/">Overview</a></li> <li><a href="/code/contribute/">Contribute</a></li> <li><a href="/code/contribute/submitting-patches/">Submitting Patches</a></li> <li><a href="/code/contribute/code-reviews/">Code Reviews</a></li> <li><a href="/code/contribute/workflow/">Workflow</a></li> <li><a href="/code/contribute/conventions/">Conventions</a></li> <li><a href="/code/bug-reporting/">Bug Reporting</a></li> <li><a href="/code/build-prerequisites/">Build Prerequisites</a></li> <li><a href="/code/repository-layout/">Repository Layout</a></li> <li><a href="/code/releases/">Releases</a></li> <li><a href="/code/roadmap/">Roadmap</a></li> </ul> </section> <section class="span3"> <h6>Docs</h6> <ul> <li><a href="/docs/webm-sdk/">WebM Codec SDK</a></li> <li><a href="/docs/container/">WebM Container Format</a></li> <li><a href="/docs/webm-encryption/">WebM Encryption</a></li> <li><a href="http://tools.ietf.org/html/draft-ietf-payload-vp8">VP8 RTP Proposal (Draft)</a></li> <li><a href="http://datatracker.ietf.org/doc/rfc6386/">RFC 6386: VP8 Data Format</a></li> <li><a href="/docs/encoder-parameters/">Encoder Examples</a></li> <li><a href="http://wiki.webmproject.org/">Wiki</a></li> </ul> </section> <section class="span3 badges" style="text-align: center;"> <div class="row"> <div class="span3" style="margin-bottom: 1em; 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