[gstreamer-bugs] [Bug 610906] [assrender] subtitles can show up late or not at all

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Thu Feb 25 02:15:10 PST 2010


https://bugzilla.gnome.org/show_bug.cgi?id=610906
  GStreamer | gst-plugins-bad | git

--- Comment #4 from Sebastian Dröge <slomo at circular-chaos.org> 2010-02-25 10:15:09 UTC ---
To give some more details, the problem here seems to be, that something sends a
filler/update newsegment event where the start position is bigger than the
subtitle buffers timestamp. This causes gst_segment_to_running_time() to return
-1, which then causes the subtitle buffer to not be displayed.

Fixing that might already fix this bug... another source of problem here could
be, that subtitles are not rendered if they are pushed not synchronized to the
video by downstream. They're then simply dropped if they're after the current
video frame. The video frames never wait for subtitle buffers, only the
subtitle buffers wait for video frames.

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