[Bug 711522] Need a standard way to get format-specific stream ID (for HTML5 track "id")

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=711522
  GStreamer | gstreamer (core) | git

--- Comment #20 from Brendan Long <self at brendanlong.com> 2013-11-12 22:37:42 UTC ---
Hm I think it might just be this file:

https://svn.webkit.org/repository/webkit/trunk/LayoutTests/media/content/counting-subtitled-srt.mkv

mkvinfo says (lots of superfluous info cut out):

|+ Segment tracks
| + A track
|  + Track number: 1 (track ID for mkvmerge & mkvextract: 0)
|  + Track UID: 2403036717
|  + Track type: video
| + A track
|  + Track number: 2 (track ID for mkvmerge & mkvextract: 1)
|  + Track UID: 1069831963
|  + Track type: subtitles
| + A track
|  + Track number: 3 (track ID for mkvmerge & mkvextract: 2)
|  + Track UID: 648149798
|  + Track type: subtitles
|  + Language: fre
|+ EbmlVoid (size: 1122)

But GStreamer gives:

Tags: taglist, container-format=(string)Matroska, video-codec=(string)"DivX\
MPEG-4\ Version\ 4", track-container-id=(string)565333916076699181,
minimum-bitrate=(uint)23600, bitrate=(uint)161363,
maximum-bitrate=(uint)312800;
Tags: taglist, track-container-id=(string)3532951484994180891,
language-code=(string)en, container-format=(string)Matroska;
Tags: taglist, track-container-id=(string)8676205028037491494,
language-code=(string)fr, container-format=(string)Matroska;

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