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View multicast stream from camera

Hello!

I use Appro soft and I have to get RTSP-stream via multicast. I run wis-streamer with parameters -s (no audio) and -m (multicast) and get urls in output:
Mulicast Play this stream using the URL:
        rtsp://192.168.255.2/H264
2 Mulicast addr:
        224.1.4.6

Url rtsp://192.168.255.2/H264 work fine, but I cant get stream from multicast address 224.1.4.6 in VLC.
VLC debug output:
$ vlc -vvv udp://@224.1.4.6:6016
......................
[0xb70006e4] main input debug: `udp://@224.1.4.6:6016' successfully opened
[0x962542c] ps demux warning: garbage at input, trying to resync...

In sniffer, I use wireshark, I see packets from camera to multicast address and I see packet from VLC to join on multicast group. Also I try change IGMP version in my system from 3 to 2 via /proc/sys/net/ipv4/conf/ethX/force_igmp_version, but this is not solve problem.

My test network is very simple PC <---> D-Link DGS-1008P <--> camera.

How can I solve this problem?
Thank you and excuse me for my bad english.