On 07/27/2012 02:34 PM, James Walker wrote:
avplay 'rtsp://username:[email protected]/axis-media/media.amp?tcp'

then it works, but the latency is very high (~1 sec) which
is not good enough for an optical tracking system.

Are you sure there is no latency in udp? or is it just that there are so many errors that you don't even know what the latency is like?

A common culprit is multithreaded encoding/decoding; If you have 8 cores, then it will insert an 8 frame delay (one per frame). You should be able to disable it by setting the coding context "thread_type" field to 0 before opening the codec.

Also, avplay tries to analyze the first few seconds of a stream and/or buffers them - so make sure you give everything 5-10 seconds to converge.


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