[MPlayer-users] A-V Synch Delay

[RuthLess Konqueror]

Hi ,
       It would be great if someone could give me some insight about acceptable Audio Video Delay for multimedia.
 
 I have observed the way mplayer computes the A-V delay.
 
 When playing movies that are on the same machine, the A-V value varies between 3 to 6 ms on the average (provided the system is not loaded).
 
 However , when I am using streaming services ( rtp streaming)
 
 mplayer rtsp://192.168.103.2/a.mov 
 
 the A-V delay varies between 300 ms on the average. Note that
 the transport time of the stream is almost zero (i.e. RTT < 1ms) , since the two machines are in the same LAN.
 
 So I would like to know :
 
 1. why does the A-V delay vary so much between the two cases ?
 2. What is the acceptable A-V delay ? Is there any standard that the industry follows ?
 
 Any help/pointers/information is greatly appreciated.
 
 Thanks
 RK
 
 
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