[gstreamer-bugs] [Bug 419351] New: [totem-gstreamer] AV synchronization problems

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  GStreamer | don't know | Ver: 0.10.x

           Summary: [totem-gstreamer] AV synchronization problems
           Product: GStreamer
           Version: 0.10.x
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: don't know
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: seb128 at debian.org
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.17/2.18
   GNOME milestone: Unspecified


The bug has been opened on https://launchpad.net/bugs/86551

"Binary package hint: totem

When watching XviD videos the synchronization between Audio and Video is
lacking. The problem is getting worse the longer I watch the video.

I have no such problems with totem-xine or gxine.

I tried setting all Audio options in the control panel to ALSA but that didn't
help...

Let me know if you need more info.

ProblemType: Bug
Date: Tue Feb 20 20:42:19 2007
DistroRelease: Ubuntu 7.04
Uname: Linux mika-pc 2.6.20-8-generic #2 SMP Tue Feb 13 05:18:42 UTC 2007 i686
GNU/Linux
...
> thank you for your bug. Does it happen on a specific video or with any video? Do you get the same problem if you play it with "gst-launch-0.10 playbin uri=file:///path/to/file"?
...


Sorry for the delay!

It happens with all XVID videos I've tested. Do you happen to know freely
available videos in this format?

The problem persists with gst-launch-0.10 playbin, but there I also get some
output which may help in finding the casue of the problem:

mika at mika-pc:~$ LANG=C gst-launch-0.10 playbin uri=file://$(pwd)/test.avi
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
No accelerated IMDCT transform found
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: audioclock1
WARNING: from element /playbin0/abin/audiosink/audiosink-actual-sink-alsadmix:
Compensating for audio synchronisation problems
Additional debug info:
gstbaseaudiosink.c(827): gst_base_audio_sink_render ():
/playbin0/abin/audiosink/audiosink-actual-sink-alsadmix:
Unexpected discontinuity in audio timestamps of more than half a second
(0:00:00.500000000), resyncing
Got EOS from element "playbin0".
Execution ended after 1301864183000 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
FREEING pipeline ...

Any idea how to further debug this problem?

BTW: vlc also has no such problems.
...
http://librarian.launchpad.net/6724574/gst-debug2-86551.log
Debug output with GST_DEBUG=2

Well, GST_DEBUG=5 is completely over the top. It produces so much output that
my computer couldn't play the video without skipping and my disk was filled up
pretty fast. So I tried with 1, 2, 3 and 4. 1 does not give any more output,
the output of 2 is attached. I'll also attach a gzipped version of the 3 output
(12 MB unzipped!). The output with GST_DEBUG=4 is 2.7 GB so I'll skip that one
as well...
...
http://librarian.launchpad.net/6724577/gst-debug3-86551.log.gz
Debug output with GST_DEBUG=3 (gzipped)"


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