[gstreamer-bugs] [Bug 587882] New: [qtdemux] PTS synchronization issue

[GStreamer (bugzilla.gnome.org)]

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=587882

  GStreamer | gst-plugins | Ver: 0.10.15
           Summary: [qtdemux] PTS synchronization issue
           Product: GStreamer
           Version: 0.10.15
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-plugins
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: tihomir.andjelic at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Please describe the problem:
If you make MPEG TS from mp4 file using “qtdemux plugin”, generated TS file
is not synchronized (a lot of video frames is skipped during playback because
of incorrect PTS).  The same issue is detected on different mp4 files. To be
sure that issue is not related to used player (VLC) generated file is played on
TV set with same behavior. 

The used gst-launch command is: 
gst-launch -v filesrc location=/usr/local/StarTrek.mp4 ! qtdemux name=demux
demux.video_00 ! queue ! h264parse ! mpegtsmux name=mux ! filesink location=/
usr/local /out_264_audio_video_2.ts demux.audio_00 ! mux.


Steps to reproduce:
1. gst-launch -v filesrc location=/usr/local/StarTrek.mp4 ! qtdemux name=demux
demux.video_00 ! queue ! h264parse ! mpegtsmux name=mux ! filesink location=/
usr/local /out_264_audio_video_2.ts demux.audio_00 ! mux. 
2. Play generated ts file with some player 
3.



Actual results:
During playback video is is interrupted ( specially on fast scenes )

Expected results:
Video/audio playback without any interrupts

Does this happen every time?
Yes, and with different input files.

Other information:
The same problem happens for .flv and .mpeg formats. gst-launch -v filesrc
location=/usr/local/video1.flv ! flvdemux name=demux ! {queue ! mpegtsmux
name=mux ! filesink location=/ usr/local /flv_test_out.ts } { demux. ! queue !
mux. } gst-launch filesrc location=/usr/local/CentenaryFull.mpg ! ffdemux_mpeg
name=demux demux.video_00 ! queue ! mpegtsmux name=mux ! filesink location=/
usr/local /mpeg_test_out.ts demux.audio_00 ! queue ! mux.


-- 
See http://bugzilla.gnome.org/page.cgi?id=email.html for more info about why you received
this email, why you can't respond via email, how to stop receiving
emails (or reduce the number you receive), and how to contact someone
if you are having problems with the system.

You can add comments to this bug at http://bugzilla.gnome.org/show_bug.cgi?id=587882.