RTSP Audio video Sync
Problem :
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Issues in RTSP/LiveStream Audio and video sync
RTSP video on Demand videos are playing fine. But Only Livestream audio and video
sync is not happening Streaming server is sending RTSP as meta data channel( just for DESCRIBE,
PLAY,PAUSE and TEARDOWN commands);Streaming server will send video and audio data over the
RTP.
Analysis:
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if there is any issue in audio and video sync issues in RTSP/Livestream RTSP,
it is because of the Streaming Server.
rtsp streaming servers are specialized servers;They have to do audio and video
sync; In case of rtsp streaming, it is enough to render the audio and video data using the
RTP timestamp. there is no need to do audio video sync with RTCP.if we are doing RTCP
sync, that will be better;
But For RTCP sync timestamp calculation it will takes much time because of
floating operations involved in it. So In case of low end devices such as mobile they will
not use the RTCP for sync; it is enough to do render the video and audio with RTP
timestamp;
Solution:
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Make the Streaming server to give output as video and audio synchronized;
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