>>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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