[Live-devel] QoS with openRTSP and Jitter output

[hong liu]

>>in my "IPTV QoS Monitoring" project i've tried to use openRTSP to get
>>QoS information for a particular stream. The output of jitter as a QoS
>>parameter is also interesting for me, so I'v extended the openRTSP code
>>to output this information. My question is, if I did it the right way,
>>because the jitter value I get, seems to be strange to me.

>The value returned by "RTPReceptionStats::jitter()" is the jitter 
>value defined in the RTP/RTCP specification (RFC 3550, section 
>6.4.1).  It is expressed in timestamp units, *not* ms, so you should 
>divide it by the RTP timestamp frequency, not 1000.I am just wondering how to get the RTP timestamp frequency from video streams. Is it contained in the SDP file or somewhere else?



Hong Liu
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