<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><pre>>><i>in my "IPTV QoS Monitoring" project i've tried to use openRTSP to get<br></i>>><i>QoS information for a particular stream. The output of jitter as a QoS<br></i>><i>>parameter is also interesting for me, so I'v extended the openRTSP code<br></i>><i>>to output this information. My question is, if I did it the right way,<br></i>><i>>because the jitter value I get, seems to be strange to me.<br></i><br>>The value returned by "RTPReceptionStats::jitter()" is the jitter <br>>value defined in the RTP/RTCP specification (RFC 3550, section <br>>6.4.1). It is expressed in timestamp units, *not* ms, so you should <br>>divide it by the RTP timestamp frequency, not 1000.</pre><div>I am just wondering how to get the RTP timestamp frequency from video streams. Is it contained
in the SDP file or somewhere else?<br><br>
</div>Hong Liu<br>------------------------------<div><br></div></div><br>
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