2.1.45 [HTML5] Section 4.7.10.12.2 Sourcing in-band text tracks

V0090: Ogg files are not supported

The specification states:

 ... Sourcing in-band text tracks
     ...
     When a media resource contains data that the user agent recognises and supports as 
     being equivalent to a text track, the user agent runs the steps to expose a 
     media-resource-specific text track with the relevant data, as follows.
         ...
         4.  If the new text track's kind is metadata, then set the text track in-band 
             metadata track dispatch type as follows, based on the type of the media 
             resource:
  
                 If the media resource is an Ogg file
  
                     The text track in-band metadata track dispatch type must be set to 
                     the value of the Role header field.

All document modes (All versions)

Ogg files are not supported.

V0091: WebM files are not supported

The specification states:

 ... Sourcing in-band text tracks
     ...
     When a media resource contains data that the user agent recognises and supports as 
     being equivalent to a text track, the user agent runs the steps to expose a 
     media-resource-specific text track with the relevant data, as follows.
         ...
         4.  If the new text track's kind is metadata, then set the text track in-band 
             metadata track dispatch type as follows, based on the type of the media 
             resource:
             ...
             If the media resource is a WebM file
  
                 The text track in-band metadata track dispatch type must be set to the 
                 value of the CodecID element.

All document modes (All versions)

WebM files are not supported.

V0092: MPEG-4 metadata is not supported

The specification states:

 ... Sourcing in-band text tracks
     ...
     When a media resource contains data that the user agent recognises and supports as 
     being equivalent to a text track, the user agent runs the steps to expose a 
     media-resource-specific text track with the relevant data, as follows.
         ...
         4.  If the new text track's kind is metadata, then set the text track in-band 
             metadata track dispatch type as follows, based on the type of the media 
             resource:
             ...
             If the media resource is an MPEG-4 file
  
                 Let the first stsd box of the first stbl box of the first minf box of the 
                 first mdia box of the text track's trak box in the first moov box of the 
                 file be the stsd box, if any. ...

All document modes (All versions)

MPEG-4 metadata is not supported.

V0093: DASH metadata is not supported

The specification states:

 ... Sourcing in-band text tracks
     ...
     When a media resource contains data that the user agent recognises and supports as 
     being equivalent to a text track, the user agent runs the steps to expose a 
     media-resource-specific text track with the relevant data, as follows.
         ...
         4.  If the new text track's kind is metadata, then set the text track in-band 
             metadata track dispatch type as follows, based on the type of the media 
             resource:
             ...
             If the media resource is a DASH media resource
  
                 The text track in-band metadata track dispatch type must be set to the 
                 concatenation of the "AdaptationSet" element attributes and all child 
                 Role descriptors.

All document modes (All versions)

DASH metadata is not supported.

V0094: MPEG-2 support is limited to HLS and ID3 timed metadata

The specification states:

 ... Sourcing in-band text tracks
     ...
     When a media resource contains data that the user agent recognises and supports as 
     being equivalent to a text track, the user agent runs the steps to expose a 
     media-resource-specific text track with the relevant data, as follows.
         ...
         4.  If the new text track's kind is metadata, then set the text track in-band 
             metadata track dispatch type as follows, based on the type of the media 
             resource:
             ...
             If the media resource is an MPEG-2 file
  
                 Let stream type 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. ...

EdgeHTML Mode (All versions)

MPEG-2 support is limited to HLS only. MPEG-2 metadata support is limited to ID3 timed metadata.

V0095: MPEG-2 files are not supported

The specification states:

 4.7.10.12.2 Sourcing in-band text tracks
     ...
     When a media resource contains data that the user agent recognises and supports as 
     being equivalent to a text track, the user agent runs the steps to expose a 
     media-resource-specific text track with the relevant data, as follows.
         ...
         4.  If the new text track's kind is metadata, then set the text track in-band 
             metadata track dispatch type as follows, based on the type of the media 
             resource:
             ...
             If the media resource is an MPEG-2 file
  
                 Let stream type 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. ...

IE11 Mode, IE10 Mode, IE9 Mode, IE8 Mode, IE7 Mode, and IE5 (Quirks) Mode (All versions)

MPEG-2 files are not supported.

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