[Live-devel] Strange problem with h264 streaming

[Felix Radensky]

Hi Ross,

On 05/11/2011 04:35 PM, Bruno Filipe Basilio wrote:
> Hi Felix,
>
> I have a similar problem.
> After 3 days playing I couldn't access the RTP/RTCP server PC anymore. Pinging didn't work either. Only after a reboot everything is ok.
> A few days later the same happened.
>
> And now I discovered something even stranger:
> I sniffed the network traffic going to and going from the server to see if I was missing anything:
>
> Analyzing the traffic I saw a stream coming from the server that was 35Mbps analyzing it some more it is a RTCP stream ->  this doesn't seems OK (a rtcp stream that is 20 times bigger than the actual video stream)
>
> Seeing this I did some more experiments:
> 1)      first I power off power on the server and put it in a separate lan.
> After sniffing the network I found 4 multicast streams coming out of it:
> -       232.29.51.215:18888 ->  rtp video stream from 2Mbps
> -       232.29.51.215:18889 ->  rtcp sender reports (a few of them)
> -       232.218.63.39:18890 ->  rtp video stream from about 200kbps
> -       232.218.63.39:18891 ->  rtcp sender reports (just a few of them)
> 2)      A placed a 2 decoders in the network and ask the rtsp multicast stream for both of them
> I received the stream and could decode it (the stream was 232.29.51.215:18888)
> But the rtcp stream 232.29.51.215:18889 suddenly became enormous about 35 Mbps
> I think this is a bug and this is causing eventually the strange behavior I mention earlier (not reacting on ping anymore)
>
>
>
Do you have any insights what could be the problem here ?
It seems to happen on different devices using live555 to stream
h264 via RTSP. I use ARM based DM6467 and Bruno is running live555
application on a PC.

Your feedback is very much appreciated.

Thanks a lot.

Felix.