<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:10pt">Dear Experts,<br><br>I have a doubt. When I am trying to debug RTSP streaming with QT (which I am still unable to achieve), I found one difference between QT and VLC setup. <br><br>The SDP information when I connected using QT is as follows:<br><br>a=rtpmap:96 H264/90000<br>a=fmtp:96 packetization-mode=1;profile-level-id=428015;sprop-parameter-sets=J0KAFZZUCg/QgAATiA,KM4ECMg=<br>a=control:track1<br>RTSPClientSession[0xab8ff8]::incomingRequestHandler1() read 303 bytes:SETUP rtsp://172.16.1.211:8002/ch2/track1 RTSP/1.0<br>CSeq: 2<br>Transport: RTP/AVP;unicast;client_port=6970-6971<br>x-retransmit: our-retransmit<br>x-dynamic-rate: 1<br>x-transport-options: late-tolerance=2.900000<br>User-Agent: QuickTime/7.6 (qtver=7.6;os=Windows NT 5.1Service Pack 3)<br>Accept-Language: en-US<br><br>And when I connected using
VLC player, the log is as follows:<br><br>a=rtpmap:96 H264/90000<br>a=fmtp:96 packetization-mode=1;profile-level-id=428015;sprop-parameter-sets=J0KAFZZUCg/QgAATiA,KM4ECMg=<br>a=control:track1<br>RTSPClientSession[0xab8ff8]::incomingRequestHandler1() read 183 bytes:SETUP rtsp://172.16.1.211:8002/ch2/track1 RTSP/1.0<br>CSeq: 3<br>Transport: RTP/AVP;unicast;client_port=56630-56631<br>User-Agent: VLC media player (LIVE555 Streaming Media v2008.07.24)<br><br>When I compare, I observed some new parameters like x-retransmit, x-dynamic-rate, x-transport-options. I presume these are client specific options. Where can I find more information about the same? Do they impact the final video display on the screen? Should I tweak any of these parameters?<br><br>Many thanks in advance.<br><br>Thanks,<br>Ganesh<br><br><br></div><br>
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