RTSP playback: audio/video synchornization problem(H264+aac)

[firerock]

Hi, all.

 

I have met a problem for A/V synchronization for RTSP. And I hope here someone can give me some suggestions.

 

I have a rtsp server sending H264+ aac stream, and a client using" gst-launch playbin uri=rtsp://127.0.0.1:8554/test.mp4 " to play the stream. I can see the video and hear the audio, but audio and video are not in synchronization. The timestamp of audio seems not correct and complains about"  

 

"WARNING: from element /GstPlayBin:playbin0/GstBin:abin/GstAutoAudioSink:audiosink/GstAlsaSink:audiosink-actual-sink-alsa: Compensating for audio synchronisation problems
Additional debug info:
gstbaseaudiosink.c(1462): gst_base_audio_sink_render (): /GstPlayBin:playbin0/GstBin:abin/GstAutoAudioSink:audiosink/GstAlsaSink:audiosink-actual-sink-alsa:
Unexpected discontinuity in audio timestamps of more than half a second (0:00:00.512000000), resyncing  "

 

The video will stop and play every several seconds and the audio is not continuous and repeating. I have used

"  GST_DEBUG=*rtp*:5 gst-launch -v playbin uri=rtsp://127.0.0.1/test.mp4 >debug2.log 2>&1 " to log the info, debug2.log is attached.

 

 

And My gstreamer version is as follows:

 

ii  gstreamer-tools                             0.10.24-1                                  Tools for use with GStreamer
ii  gstreamer0.10-alsa                          0.10.22-5                                  GStreamer plugin for ALSA
ii  gstreamer0.10-audiosink                     0.10.22                                    GStreamer virtual audio plugins from the "good" set
ii  gstreamer0.10-esd                           0.10.14-1                                  GStreamer plugin for ESD
ii  gstreamer0.10-ffmpeg                        0.10.6.2-1ubuntu2                          FFmpeg plugin for GStreamer
ii  gstreamer0.10-gnomevfs                      0.10.22-5                                  GStreamer plugin for GnomeVFS
ii  gstreamer0.10-plugins-base                  0.10.24-1                                  GStreamer plugins from the "base" set
ii  gstreamer0.10-plugins-base-apps             0.10.24-1                                  GStreamer helper programs from the "base" set
ii  gstreamer0.10-plugins-good                  0.10.14-1                                  GStreamer plugins from the "good" set

ii gstreamer0.10-plugins-bad                     0.10.11-2ubuntu1                       GStreamer plugins from the "bad" set
ii  gstreamer0.10-pulseaudio                    0.10.14-1                                  GStreamer plugin for PulseAudio
ii  gstreamer0.10-tools                         0.10.24-1                                  Tools for use with GStreamer
ii  gstreamer0.10-x                             0.10.24-1                                  GStreamer plugins for X11 and Pango
ii  libgstreamer-plugins-base0.10-0             0.10.24-1                                  GStreamer libraries from the "base" set
ii  libgstreamer-plugins-base0.10-dev           0.10.22-5                                  GStreamer development files for libraries from the "base" set
ii  libgstreamer0.10-0                          0.10.24-1                                  Core GStreamer libraries and elements
ii  libgstreamer0.10-dev                        0.10.22-1                                  GStreamer core development files
ii  python-gst0.10                              0.10.14-1ubuntu1                           generic media-playing framework (Python bindings)

 

 

 

And all these gstreamer package are aligned with ubuntu jaunty(9.04).

 

If anyone have met such problem or have solve such issues, please give me a suggestion or anything else. I will appreciate for your help. Thanks.

 

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