[Live-devel] Jitter value with openRTSP

[Ross Finlayson]

>I've seen (thanks to wireshark) in the SDP : "Media Attribute (a): 
>rtpmap:96 MP4V-ES/5544"

You don't need to use wireshark to see this - you will also see it in 
the diagnostic output from "openRTSP".

Therefore, the server is telling you that the RTP timestamp frequency 
is 5544.  This is very unusual, because a timestamp frequency of 
90000 Hz is recommended, and used by everyone else (for MPEG-4 
Video), as far as I know.

>And my last question:
>"the value jitter that is given in the stats (QoS stats) is the mean jitter?"

It's a weighted average, as described in RFC 3550, section A.8.
-- 

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