We've sat up Wowza Streaming Engine (4.3.0) to receive multicast feeds from live CCTV cameras, using their .sdp files (i've attached one example below).
However there is a strange behavior with the feeds, where we need to connect to the cameras in parallel using VLC (using the same .sdp files).
Indeed if we don't launch VLC, it seems like the subscription to the multicast feed is not "activated", hence Wowza won't receive any data.
Hope this makes sense.
.sdp file for a SONY CS50P
c=IN IP4 184.108.40.206/254
a=source-filter: incl IN IP4 220.127.116.11 10.243.200.136
m=video 5008 RTP/AVP 96
a=fmtp:105 packetization-mode=1; profile-level-id=274d60; sprop-parameter-sets=Z01gKI1oBQAgbAWyAAAH0gAA6mDagA+gAHJ173UPFCKg,KO4ESSAAAA==