[Bug 741306] qtmux: handle overlapping subtitle buffers properly

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Tue Dec 9 19:04:08 PST 2014


https://bugzilla.gnome.org/show_bug.cgi?id=741306
  GStreamer | gst-plugins-good | git

--- Comment #3 from Matej Knopp <matej.knopp at gmail.com> 2014-12-10 03:04:06 UTC ---
Uh. What do you mean by broken subtitle streams? Overlapping subtitles are a
perfectly valid and common thing. I.e. web vtt specification:
http://www.webmproject.org/docs/container/
> The timestamps for WebVTT cues can overlap in time.

It's only MP4 (and maybe FLV?) that can't represent this, because there are no
timestamps, just durations. I think this restriction is muxer-specific, so I'm
not sure if separate element is really the answer here.

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