HTML5 Tracker

Short URL: http://html5.org/r/7151

SVN	Bug	Comment	Time (UTC)
7151	13359	Define textTrack.inBandMetadataTrackDispatchType for MPEG-2 also.	2012-06-28 05:36

Index: source
===================================================================
--- source	(revision 7150)
+++ source	(revision 7151)
@@ -36318,6 +36318,27 @@
      title="">CodecID</code> element. <a
      href="#refsWEBMCG">[WEBMCG]</a></dd>
 
+     <dt>If the <span>media resource</span> is an MPEG-2 file</dt>
+
+     <dd>Let <var title="">stream type</var> be the value of the
+     "stream_type" field describing the text track's type in the
+     file's program map section, interpreted as an 8-bit unsigned
+     integer. Let <var title="">length</var> be the value of the
+     "ES_info_length" field for the track in the same part of the
+     program map section, interpreted as an integer as defined by the
+     MPEG-2 specification. Let <var title="">descriptor bytes</var> be
+     the <var title="">length</var> bytes following the
+     "ES_info_length" field. The <span>text track in-band metadata
+     track dispatch type</span> must be set to the concatenation of
+     the <var title="">stream type</var> byte and the zero or more
+     <var title="">descriptor bytes</var> bytes, expressed in
+     hexadecimal using characters in the ranges U+0030 DIGIT ZERO (0)
+     to U+0039 DIGIT NINE (9) and U+0041 LATIN CAPITAL LETTER A to
+     U+0046 LATIN CAPITAL LETTER F.
+     <a href="#refsMPEG2">[MPEG2]</a>
+
+     </dd>
+
      <dt>If the <span>media resource</span> is an MPEG-4 file</dt>
 
      <dd>Let the 
@@ -120528,8 +120549,12 @@
    <dt id="refsMIMESNIFF">[MIMESNIFF]</dt>
    <dd><cite><a href="http://mimesniff.spec.whatwg.org/">MIME Sniffing</a></cite>, A. Barth, I. Hickson. WHATWG.</dd>
 
+   <dt id="refsMPEG2">[MPEG2]</dt>
+   <dd><cite>ISO/IEC 13818-1: Information technology &mdash; Generic coding of moving pictures and associated audio information: Systems</cite>. ISO/IEC.</dd>
+   <!-- search for ["bytes are removed from this buffer at a rate defined by sb_leak_rate"] to find it -->
+
    <dt id="refsMPEG4">[MPEG4]</dt>
-   <dd><cite><a href="">ISO/IEC 14496-12: ISO base media file format</a></cite>. ISO/IEC.</dd>
+   <dd><cite>ISO/IEC 14496-12: ISO base media file format</cite>. ISO/IEC.</dd>
    <!-- search for ["Box Structure was and subsequent clauses were re-organized"] to find it -->
 
    <dt id="refsMQ">[MQ]</dt>

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