[gstreamer-bugs] [Bug 548282] New: h.264 audio/video out of sync

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | don't know | Ver: 0.10.18
           Summary: h.264 audio/video out of sync
           Product: GStreamer
           Version: 0.10.18
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: don't know
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: jay.kinzer at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.21/2.22
   GNOME milestone: Unspecified


Please describe the problem:
When playing h.264 content, especially larger .mkv files, the audio tends to
get out of sync with the video. This problem generally builds over time,
starting out in sync or barely out of sync, and gradually growing more and more
out of sync as the video progresses. 

On some videos, pressing pause will re-sync the video temporarily, but it will
again get out-of-sync after a few minutes. I've tried watching several h.264
videos in both Totem and Elisa and have seen this issue in most of them. There
are a few videos which play fine, but they are the exception, not the rule.
I've also watched these same videos through VLC or mplayer (which don't use
gstreamer) and they play fine, with no out-of-sync issues.

Steps to reproduce:
1. Open a "large" h.264 file (i notice it the most on files of around 4GB's or
larger), in Totem or through Elisa media center (or any other media player that
uses gstreamer).
2. Watch the video for several minutes, it usually starts in-sync but quickly
starts to get more and more out-of-sync.
3. Pressing pause and then play sometimes temporarily re-syncs the audio/video.


Actual results:
The video appears to play correctly but the audio gradually becomes out of
sync.

Expected results:
The audio and video should stay in sync throughout the entire movie.

Does this happen every time?
Yes

Other information:


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