[FFmpeg-trac] #2171(undetermined:new): Joining a SSM multicast group using an SDP

[FFmpeg]

#2171: Joining a SSM multicast group using an SDP
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             Reporter:  dbrb2   |                    Owner:
                 Type:  defect  |                   Status:  new
             Priority:  normal  |                Component:  undetermined
              Version:  1.1.1   |               Resolution:
             Keywords:  sdp     |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
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Comment (by dbrb2):

 Hi,

 Yes, I have tried it on the latest from git:
 FFmpeg version git-b319052
 With the same results.

 Testing / replicating is tricky, not only because the streams tend to be
 quite large, but more because the ability to work with multicast is so
 much a feature of the switches on the network as well as the video stream
 itself.

 I imagine this is a massive oversimplification, but presumably the problem
 is either in the parsing of the sdp file, and detecting that SSM is
 required, or detecting SSM is required, but not issuing the correct IGMPv3
 messages.

 To check for the first problem, is there an alternate syntax I can use to
 join the ssm multicast stream?
 Something along the lines of:

 ffmpeg -i udp://<multicast_ip>:<multicast_port> <rtp type> <ssm address>

 Ben

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2171#comment:5>
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