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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Media Source Extensions Byte Stream Format Registry</title>
<script src="https://www.w3.org/Tools/respec/respec-w3c" class="remove"></script>
<script src="https://w3c.github.io/media-source/media-source.js" class="remove"></script>
<script class="remove">
var respecConfig = {
// specification status (e.g. WD, LCWD, NOTE, etc.). If in doubt use ED.
specStatus: "ED",
// the specification's short name, as in https://www.w3.org/TR/short-name/
shortName: "mse-byte-stream-format-registry",
// if there a publicly available Editor's Draft, this is the link
edDraftURI: "https://w3c.github.io/mse-byte-stream-format-registry/",
// editors, add as many as you like
// only "name" is required
editors: [
{ name: "Matthew Wolenetz", url: "", mailto: "[email protected]",
company: "Google Inc.", companyURL: "https://www.google.com/", w3cid: "76912" },
{ name: "Jerry Smith", url: "",
company: "Microsoft Corporation", companyURL: "https://www.microsoft.com/" },
{ name: "Aaron Colwell (until April 2015)", url: "",
company: "Google Inc.", companyURL: "https://www.google.com/" },
],
mseDefGroupName: "byte-stream-format-registry",
mseUnusedGroupNameExcludeList: ["media-source"],
mseContributors: [
],
group: "media",
otherLinks: [{
key: 'Repository',
data: [{
value: 'We are on GitHub',
href: 'https://github.com/w3c/mse-byte-stream-format-registry/'
}, {
value: 'File a bug',
href: 'https://github.com/w3c/mse-byte-stream-format-registry/issues'
}, {
value: 'Commit history',
href: 'https://github.com/w3c/mse-byte-stream-format-registry/commits/main/index.html'
}]
},{
key: 'Mailing list',
data: [{
value: '[email protected]',
href: 'https://lists.w3.org/Archives/Public/public-media-wg/'
}]
}],
preProcess: [ mediaSourceAddMainSpecDefinitionInfos, mediaSourcePreProcessor ],
// Empty definitions for objects declared in the document are here to
// prevent error messages from being displayed for references to these objects.
definitionMap: {},
postProcess: [ mediaSourcePostProcessor ]
};
</script>
<style type="text/css">
#registry table { border-collapse: collapse; border-style: hidden hidden none hidden; }
#registry table thead, table tbody { border-bottom: solid; }
#registry table tbody th:first-child { border-left: solid; }
#registry table tbody th { text-align: left; }
#registry table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
</style>
</head>
<body>
<section id="abstract">
<p>This specification defines the byte stream formats for use with the <a def-id="mse-spec"></a> specification [[MEDIA-SOURCE]].</p>
</section>
<section id="sotd">
<p>The working group maintains <a href="https://github.com/w3c/mse-byte-stream-format-registry/issues">a list of all bug reports that the editors have not yet tried to address</a>; there may also be related open bugs in the [[MEDIA-SOURCE]] repository.</p>
<p>Implementors should be aware that this specification is not stable. <strong>Implementors who are not taking part in the discussions are likely to find the specification changing out from under them in incompatible ways.</strong> Vendors interested in implementing this specification before it eventually reaches the Candidate Recommendation stage should join the mailing list mentioned below and take part in the discussions.</p>
</section>
<section id="purpose">
<h2>Purpose</h2>
<p>This registry is intended to enhance interoperability among implementations and users of
<a class="externalDFN">SourceBuffer</a> objects described in the
<a def-id="mse-spec"></a> (MSE) specification. In particular, this registry provides the means (1) to identify
and avoid MIME-type collisions among byte stream formats, and (2) to disclose information about byte stream formats accepted by MSE
implementations to promote interoperability.
</section>
<section id="organization">
<h2>Organization</h2>
<p>The registry maintains a mapping between MIME-type/subtype pairs and byte stream format specifications. The byte stream format specifications describe the
structure and semantics of byte streams accepted by <a class="externalDFN">SourceBuffer</a> objects
created with the associated MIME-type/subtype pair.</p>
<p>This registry is not intended to include any information on whether a byte stream format is encumbered by intellectual property claims. Implementors and users
are advised to seek appropriate legal counsel in this matter if they intend to implement or use a specific byte stream format.</p>
</section>
<section id="entry-requirements">
<h2>Registration Entry Requirements</h2>
<ol>
<li>Each entry MUST include a unique MIME-type/subtype pair. If the byte stream format is derived-from an existing file format, then it SHOULD use the
MIME-type/subtype pairs typically used for the file format.</li>
<li>Each entry MUST include a <a def-id="generate-timestamps-flag"></a> value that MUST be used by
<a class="externalDFN">SourceBuffer</a> when handling the byte stream format.</li>
<li>Each entry MUST include a link that references a publically available specification. It is recommended that such a specification be made available
without cost (other than reasonable shipping and handling if not available by online means).</li>
<li>Each entry MUST comply with all requirements outlined in the <a def-id="byte-stream-formats-section"></a>
of the <a def-id="mse-spec"></a> specification [[!MEDIA-SOURCE]].</li>
<li>Candidate entries MUST be announced on <a href="mailto:[email protected]">[email protected]</a> (<a href="mailto:[email protected]">subscribe</a>,
<a href="http://lists.w3.org/Archives/Public/public-html-media/">archives</a>) so they can be discussed and evaluated for compliance before being added to the
registry.</li>
</ol>
<p>If a registration fails to satisfy a mandatory requirement specified above, then it MAY be removed from the registry (without prejudice).
</section>
<section id="registry">
<h2>Registry</h2>
<table>
<thead>
<tr>
<th>MIME type/subtype</th>
<th>Public Specification(s)</th>
<th>Generate Timestamps Flag</th>
</tr>
</thead>
<tbody>
<tr>
<td>
audio/webm<br>
video/webm
</td>
<td><a def-id="byte-stream-format-registry-webm"></a> [[!MSE-FORMAT-WEBM]]</td>
<td>false</td>
</tr>
<tr>
<td>
audio/mp4<br>
video/mp4
</td>
<td><a def-id="byte-stream-format-registry-isobmff"></a> [[!MSE-FORMAT-ISOBMFF]]</td>
<td>false</td>
</tr>
<tr>
<td>
audio/mp2t<br>
video/mp2t
</td>
<td><a def-id="byte-stream-format-registry-mp2t"></a> [[!MSE-FORMAT-MP2T]]</td>
<td>false</td>
</tr>
<tr>
<td>
audio/mpeg<br>
audio/aac
</td>
<td><a def-id="byte-stream-format-registry-mpeg-audio"></a> [[!MSE-FORMAT-MPEG-AUDIO]]</td>
<td>true</td>
</tr>
</tbody>
</table>
</section>
<section id="conformance"></section>
</body>
</html>