[Live-devel] H.264 RTSP Streaming with QuickTime

[Ganesh V]

Dear Experts,

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. 

The SDP information when I connected using QT is as follows:

a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=428015;sprop-parameter-sets=J0KAFZZUCg/QgAATiA,KM4ECMg=
a=control:track1
RTSPClientSession[0xab8ff8]::incomingRequestHandler1() read 303 bytes:SETUP rtsp://172.16.1.211:8002/ch2/track1 RTSP/1.0
CSeq: 2
Transport: RTP/AVP;unicast;client_port=6970-6971
x-retransmit: our-retransmit
x-dynamic-rate: 1
x-transport-options: late-tolerance=2.900000
User-Agent: QuickTime/7.6 (qtver=7.6;os=Windows NT 5.1Service Pack 3)
Accept-Language: en-US

And when I connected using VLC player, the log is as follows:

a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=428015;sprop-parameter-sets=J0KAFZZUCg/QgAATiA,KM4ECMg=
a=control:track1
RTSPClientSession[0xab8ff8]::incomingRequestHandler1() read 183 bytes:SETUP rtsp://172.16.1.211:8002/ch2/track1 RTSP/1.0
CSeq: 3
Transport: RTP/AVP;unicast;client_port=56630-56631
User-Agent: VLC media player (LIVE555 Streaming Media v2008.07.24)

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?

Many thanks in advance.

Thanks,
Ganesh


      
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