Unsynced Audio and Video signals in RTSP Stream

[cfd new]

 I guess you send out audio and video separately. If yes, you may try to send out audio first and then video.
   Joe

    On Thursday, April 18, 2024, 08:13:43 a.m. EDT, Felix Sternkopf via gstreamer-devel <gstreamer-devel at lists.freedesktop.org> wrote:  
 
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Dear GST Community,
 
i have implemented a rtsp server with the gst-rtsp-server module. The server receives an audio signal via an interaudiosrc and a video signal via an intervideosrc:
 
           intervideosrc channel=videosrc à videoconvertà vaapih264enc bitrate=5000 zerolatency=trueà rtph264pay pt=96 name=pay0
 
            interaudiosrc channel=audiosrcà opusenc bitrate=64à queueà rtpopuspay pt=97 name=pay1
 
  
 
When I try to view the stream via an rtsp client, for example VLC Player the stream works, but the audio signal is about 1 second behind the video signal. I already tried different audio encoders and different queue parameters like buffer size and leaky queues, but nothing solved the problem.
 
When I start the same pipeline as above but mux both signals and write them into a filesink they are synchronized.
 
  
 
I know that the server module internally uses the multiudpsink element. Is there any possibility to edit multiudpsink parameters from outside?
 
Does anybody have any ideas about this problem? I already read every google result I could find about it.
 
  
 
Best Regards,
 
Felix Sternkopf
   
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