Hi to everyone, I have some questions about multicast that hope someone can help me with.
I need to transmit a mpeg4 video using multicast and for doing that I'm using the "-m" option in wis-streamer. Doing that and using Wireshark I can see the multicast packets but if I try to watch the video connecting to the multicast address using VLC I see nothing, but, if I use the RTSP option in VLC then I can see the video. With RTSP the SDP info is as following: v=0 o=- 952047184189632 1 IN IP4 192.168.1.95 s=RTSP/RTP stream i=mpeg4 t=0 0 a=tool:LIVE555 Streaming Media v2008.04.02 a=type:broadcast a=control:* a=source-filter: incl IN IP4 * 192.168.1.95 a=rtcp-unicast: reflection a=range:npt=0- a=x-qt-text-nam:RTSP/RTP stream from DaVinci EVM a=x-qt-text-inf:mpeg4 m=audio 6002 RTP/AVP 96 c=IN IP4 232.36.244.217/255 a=rtpmap:96 L16/8000 a=control:track1 m=video 6000 RTP/AVP 97 c=IN IP4 232.36.244.217/255 a=rtpmap:97 MP4V-ES/90000 a=fmtp:97 profile-level-id=1;config=000001B001000001B509000001010000012000844007A94022 D0A21F a=control:track2 And the SETUP says: Transport: RTP/AVP;multicast;destination=232.36.244.217;source=192.168.1.95;port=6002-6 003;ttl=255 Does it mean I am really transmiting in multicast? shouldn't I be able to connect directly to the multicast address? Another thing is that I read that doing: ping 224.0.0.2 the multicast router should answer, but I get no answer. Does it mean my router is not multicast? As you can see I'm pretty lost with multicast, so I would be grateful if something could help me. Thanks in advance. Best regards to everyone, Marta
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