> All videos in http://m.youtube.com are with RTSP streaming. For 
> example,rtsp://v4.cache5.c.youtube.com/CjgLENy73wIaLwmvdEKI8wMquBMYJCAkFEIJbXYtZ29vZ2xlSARSB3JlbGF0ZWRgt5rQ3tb1r51ODA==/0/0/0/video.3gp
> I use VLC 1.1.10 to play the RTSP URL. The playback is not smooth in the 
> beginning. Every time, when the video resumes after pause, the playback must 
> be not smooth. I use a traffic sniffer tool (e.g. WireShark) to analyze the 
> incoming packets and found that the sending speed from server in the 
> beginning is much higher than the stream bitrate. Therefore, the more pause 
> and play are sent, the more packets are queued.

This is unlikely to be a problem with our software.  (The best way to verify 
this is to use "openRTSP", rather than VLC, because openRTSP is 100% our 
software.)  Our software - as used in VLC - only receives incoming RTP packets; 
it does not decode or render them.

If the server is sending data more rapidly than it should, then that's a 
problem with the server, not the client.


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/

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