[FFmpeg-user] UDP unicast & multicast output

[pkv.stream]

well, the port 1234 is closed on your 224,1,1,1 address ...
(I jsut scanned it)

Le 16/07/2016 à 9:40 PM, Anacelia Sarlo a écrit :
> Hello,
>        I'am receiving a live stream and I want to copy 2 bit streams (video
> H.264 & audio AAC)  and re stream them with mpegts format to an udp
> multicast output.
> With an udp unicast output it works ok, but when I try with an udp
> multicast one, I see the on the ffmpeg console that the rate start to down
> and the stream begin
> to cut off.
> My doubt is how ffmpeg works with udp unicast and multicast, and what could
> be wrong with my  multicast example?
> I'am attaching both commands.
>
> UDP unicast output
> ffmpeg -re -y -i $stream -map 0:4 -map 0:5 -rtbufsize 1G -c copy -f mpegts
> -mpegts_pmt_start_pid 66 -streamid 1:71 -streamid 0:70 udp://
> 192.168.1.109:1234?pkt_size=1316  works OK!
>
> UDP multicast output
> ffmpeg -re -y -i $stream -map 0:4 -map 0:5 -rtbufsize 1G -c copy -f mpegts
> -mpegts_pmt_start_pid 66 -streamid 1:71 -streamid 0:70 udp://
> 224.1.1.1:1234?pkt_size=1316 video cut off!
>
> Thanks a lot for your suggestions.
> Ana
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