[FFmpeg-user] is filtering 3 multicast addresses using same port possible?

Jimmy Asher jasher at safarimontage.com
Tue Apr 2 21:31:47 EEST 2019



´╗┐On 4/2/19, 2:11 PM, "ffmpeg-user on behalf of robb" <ffmpeg-user-bounces at ffmpeg.org on behalf of sf99er at gmail.com> wrote:

    hello,
    i'm trying to ingest 3 multicast streams using the same port.
    i can change the the multicast addresses (239.255.x.x) but not the ports
    i can also change the group #s
    
    i read on the FFmpeg Protocols Documentation page under udp that:
    
    sources=address[,address]Only receive packets sent from the specified
    addresses. In case of multicast, also subscribe to multicast traffic coming
    from these addresses only.
    *block=address[,address]*
    Ignore packets sent from the specified addresses. In case of multicast,
    also exclude the source addresses in the multicast subscription.
    
    however, the following doesn't seem to work & i'm not able to find others
    with the same kind of port problem
    
    ffmpeg -i udp://192.168.1.2:5004*?sources=239.255.42.42* -vcodec copy
    -codec:a aac -b:a 128k -f flv out.flv
    
    am i missing something in the syntax or address assignment?
    
    thx for all the bits :)
    _______________________________________________


Have you tried debugging your command?

Usually you need to send a complete uncut console output from ffmpeg along with your issue

ffmpeg -loglevel debug -i udp://@239.255.42.42:5004 -f raw -





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