The WebM Project | Developer Overview

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google.setOnLoadCallback(function() { google.search.CustomSearchControl.attachAutoCompletion( '003367860376540524942:a7a4auyo1la', document.getElementById('q'), 'cse-search-box'); }); </script> <form action="https://www.google.com/cse" class="navbar-search pull-right searchbox"> <div class="control-group"> <div class="controls"> <div class="input-prepend"> <span class="add-on"><i class="icon-search"></i></span><input type="text" name="q" id="q" autocomplete="on" class="span2" placeholder="" style="background-image: none;"> <input type="hidden" name="cx" value="003367860376540524942:a7a4auyo1la"> <input type="hidden" name="ie" value="UTF-8"> </div> </div> </div> </form> </div> </div> </div> </div> </header> <div class="container"> <div class="row"> <div class="span10 offset1"> <ul class="breadcrumb"> <li><a href="/"> Home </a><span class="divider">></span> </li> <li class="active"> Code </li> </ul> </div> </div> <div class="row"> <div class="span10 offset1"> <h2>Developer Overview</h2> <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="#webm-repositories">WebM Repositories</a><ul> <li><a href="#libvpx-vp8vp9-codec-sdk">libvpx: VP8/VP9 Codec SDK</a></li> <li><a href="#libwebm-webm-file-parser">libwebm: WebM File Parser</a></li> <li><a href="#webm-tools-alpha-channel-encryption-and-streaming-related-tools">webm-tools: Alpha-channel, Encryption, and Streaming-related tools</a></li> <li><a href="#webmdshow-directshow-filters-source">webmdshow: DirectShow Filters Source</a></li> <li><a href="#webmquicktime-quicktime-components-source">webmquicktime: QuickTime Components Source</a></li> <li><a href="#webminspector-webm-file-inspector">webminspector: WebM File Inspector</a></li> <li><a href="#vp8-test-vectors-decoder-test-vectors">vp8-test-vectors: Decoder Test Vectors</a></li> <li><a href="#udpsample-udp-sample-code">udpsample: UDP Sample Code</a></li> <li><a href="#bitstream-guide-vp8-data-format">bitstream-guide: VP8 Data Format</a></li> </ul> </li> <li><a href="#webp-repositories">WebP Repositories</a><ul> <li><a href="#libwebp-webp-image-library">libwebp: WebP Image Library</a></li> <li><a href="#libwebp-test-data-dwebp-validation-tool">libwebp-test-data: dwebp Validation Tool</a></li> </ul> </li> <li><a href="#set-up-your-machine">Set-up Your Machine</a></li> <li><a href="#start-hacking">Start Hacking</a></li> <li><a href="#contribute">Contribute</a></li> </ul> </div> <p>We use the <a href="https://git-scm.com">Git</a> version control software. If you are unfamiliar with Git, the fastest way to get the code is to download one of the <a href="/code/releases/">versioned</a> <a href="https://storage.googleapis.com/downloads.webmproject.org/releases/webm/index.html">snapshots</a>. To learn about Git, we recommend you start with the <a href="https://git-scm.com/doc">documentation</a>.</p> <h3 id="webm-repositories">WebM Repositories</h3> <p>Also see: <a href="https://build.webmproject.org/jenkins/"><strong>Continuous Integration</strong></a></p> <h4 id="libvpx-vp8vp9-codec-sdk">libvpx: VP8/VP9 Codec SDK</h4> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/libvpx</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/libvpx</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/libvpx/">https://chromium.googlesource.com/webm/libvpx/</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/libvpx/">https://github.com/webmproject/libvpx/</a></td> </tr> </tbody> </table> </div> <div class="alert alert-block"> <p><h4 class="alert-heading">Building on Windows</h4></p> <p>Building the source code from git requires that you be familiar with and have installed a Unix-like environment such as <a href="https://www.cygwin.com">Cygwin</a> or MSYS.</p> </div> <h4 id="libwebm-webm-file-parser">libwebm: WebM File Parser</h4> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/libwebm</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/libwebm</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/libwebm">https://chromium.googlesource.com/webm/libwebm</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/libwebm/">https://github.com/webmproject/libwebm/</a></td> </tr> </tbody> </table> </div> <h4 id="webm-tools-alpha-channel-encryption-and-streaming-related-tools">webm-tools: Alpha-channel, Encryption, and Streaming-related tools</h4> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/webm-tools</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/webm-tools</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/webm-tools">https://chromium.googlesource.com/webm/webm-tools</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/webm-tools/">https://github.com/webmproject/webm-tools/</a></td> </tr> </tbody> </table> </div> <h4 id="webmdshow-directshow-filters-source">webmdshow: DirectShow Filters Source</h4> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/webmdshow</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/webmdshow</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/webmdshow">https://chromium.googlesource.com/webm/webmdshow</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/webmdshow/">https://github.com/webmproject/webmdshow/</a></td> </tr> </tbody> </table> </div> <h4 id="webmquicktime-quicktime-components-source">webmquicktime: QuickTime Components Source</h4> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/webmquicktime</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/webmquicktime</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/webmquicktime">https://chromium.googlesource.com/webm/webmquicktime</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/webmquicktime/">https://github.com/webmproject/webmquicktime/</a></td> </tr> </tbody> </table> </div> <h4 id="webminspector-webm-file-inspector">webminspector: WebM File Inspector</h4> <p>Dumps all EBML and WebM data in a WebM file to stdout.</p> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/webminspector</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/webminspector</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/webminspector">https://chromium.googlesource.com/webm/webminspector</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/webminspector/">https://github.com/webmproject/webminspector/</a></td> </tr> </tbody> </table> </div> <h4 id="vp8-test-vectors-decoder-test-vectors">vp8-test-vectors: Decoder Test Vectors</h4> <p>Used to validate VP8 decoder conformance.</p> <p>This project is relatively static. Please discuss any proposed commits on <a href="https://groups.google.com/a/webmproject.org/group/codec-devel"><em>codec-devel</em></a> before submitting.</p> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/vp8-test-vectors</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/vp8-test-vectors</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/vp8-test-vectors">https://chromium.googlesource.com/webm/vp8-test-vectors</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/vp8-test-vectors/">https://github.com/webmproject/vp8-test-vectors/</a></td> </tr> </tbody> </table> </div> <h4 id="udpsample-udp-sample-code">udpsample: UDP Sample Code</h4> <p>A simple, unsupported videoconferencing demo application. May require considerable modification to run in your environment.</p> <ul> <li><a href="/media/pdf/udpsample.pdf">Project description (PDF)</a></li> </ul> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/udpsample</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/udpsample</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/udpsample">https://chromium.googlesource.com/webm/udpsample</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/udpsample/">https://github.com/webmproject/udpsample/</a></td> </tr> </tbody> </table> </div> <h4 id="bitstream-guide-vp8-data-format">bitstream-guide: VP8 Data Format</h4> <p>Text source of RFC 6386, "VP8 Data Format and Decoding Guide"</p> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/bitstream-guide</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/bitstream-guide</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/bitstream-guide">https://chromium.googlesource.com/webm/bitstream-guide</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/bitstream-guide/">https://github.com/webmproject/bitstream-guide/</a></td> </tr> </tbody> </table> </div> <h3 id="webp-repositories">WebP Repositories</h3> <h4 id="libwebp-webp-image-library">libwebp: WebP Image Library</h4> <p>Provides <code>libwebp.so</code>, a library for encoding and decoding WebP image files. See the Google Code site for more information and related tools, as well as the <a href="https://groups.google.com/a/webmproject.org/group/webp-discuss"><em>webp-discuss</em></a> mailing list:</p> <ul> <li><a href="https://developers.google.com/speed/webp/">https://developers.google.com/speed/webp/</a></li> <li><a href="https://groups.google.com/a/webmproject.org/group/webp-discuss">https://groups.google.com/a/webmproject.org/group/webp-discuss</a></li> </ul> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/libwebp</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/libwebp</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/libwebp">https://chromium.googlesource.com/webm/libwebp</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/libwebp/">https://github.com/webmproject/libwebp/</a></td> </tr> </tbody> </table> </div> <h4 id="libwebp-test-data-dwebp-validation-tool">libwebp-test-data: dwebp Validation Tool</h4> <p>Validates the output of <code>dwebp</code>, via MD5 sum. <code>dwebp</code> is an example utility created by <code>libwebp</code>, above.</p> <div class="simple-left"> <table> <thead> <tr> <th>Task</th> <th>URL</th> </tr> </thead> <tbody> <tr> <td>clone</td> <td>https://chromium.googlesource.com/webm/libwebp-test-data</td> </tr> <tr> <td><a href="/code/contribute/submitting-patches/">push</a></td> <td>https://chromium-review.googlesource.com/webm/libwebp-test-data</td> </tr> <tr> <td>browse</td> <td><a href="https://chromium.googlesource.com/webm/libwebp-test-data">https://chromium.googlesource.com/webm/libwebp-test-data</a></td> </tr> <tr> <td>mirror</td> <td><a href="https://github.com/webmproject/libwebp-test-data/">https://github.com/webmproject/libwebp-test-data/</a></td> </tr> </tbody> </table> </div> <h3 id="set-up-your-machine">Set-up Your Machine</h3> <p>Make sure you have all the <a href="/code/build-prerequisites/">build dependencies</a> before trying to build the WebM source code.</p> <h3 id="start-hacking">Start Hacking</h3> <p>Got your own itch? Great! Want some inspiration? See the <a href="/code/roadmap/">roadmap</a> for some projects that we think would be interesting. Talk to us on <a href="/about/discuss/">one of our mailing lists</a> so we have an idea what you're interested in -- maybe you can find a partner!</p> <h3 id="contribute">Contribute</h3> <p>See our page on <a href="/code/contribute/submitting-patches/">submitting patches</a> for more information on getting your change peer-reviewed and merged upstream.</p> </div> </div> <div class="row"> <div class="span10 offset1"> </div> </div> </div>  </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; margin-top: 1em;"> Copyright 2010 - <script type="text/javascript" nonce="ZSa8ZaGrNKaNoIEZVp1NSA">document.write(new Date().getFullYear()); </script><br> The WebM Project </div> </div> <div class="row"> <div class="span3" style="margin-bottom: 1em;"> <a href="http://www.w3.org/html/logo/" class="no-ext"><img src="/media/images/html5-logo.png" alt="HTML5 Powered with CSS3 / Styling, and Semantics" title="HTML5 Powered with CSS3 / Styling, and Semantics"></a> </div> </div> <div class="row"> <div class="span3"> <a href="mailto:webmaster@webmproject.org">webmaster@webmproject.org</a> </div> </div> </section> </div> </div> </footer> <script nonce="ZSa8ZaGrNKaNoIEZVp1NSA"> $(document).ready(function(){ $("a.tocbutton").click(function () { $("div.toc").slideToggle("slow"); var text = $(this).text() == 'Show Contents' ? 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The WebM Project | Developer Overview