> None of these is the problem, as you have said, the CPU utilization remains 
> low, and there is no network problem as i am running server and cliente on 
> the same machine.
> 
> The number of sockets cannot be a problem, because with high resolution 
> videos, only with 5 or 6 clients connected, the performance decreases a lot. 
> You can continue adding clients, but without a good performance...

Are these clients actually decoding and displaying the video (rather than just 
receiving it)?  If so, then perhaps your bottleneck is there - in whatever is 
doing the decoding?  E.g., do you have a separate GPU or something doing the 
decoding?

One way to test this is to use "openRTSP" as your client.  "openRTSP" just 
receives data (and outputs it to a file), but does not decode it.  Try running 
"openRTSP" multiple times (you may wish to use the "-F <filename-prefix>" 
option to give each output file a different filename prefix, to distinguish 
them).  Then try playing the received files using a media player.  (If your 
video is H.264, and you're using VLC as your media player, then you'll need to 
rename each video file to have a ".h264" filename suffix.)  This will tell you 
whether or not data loss is happening.


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

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