You really nailed it! after I relayed one of the original streams to a different port, I can now join both at the same time.
Thank you very much for the quick and accurate answer! On Wed, Mar 10, 2010 at 1:43 PM, Bogdan Coanda <[email protected]>wrote: > from what I know, this is because of socket restrictions. I may be wrong in > how ffmpeg uses them, but generally, the first multicast creates a socket, > declares it as server side on a particular port, and starts listening. the > problem appears when you declare another multicast on the same port, > meaning > in will fail when the program behind will declare the second socket as a > server on the same port on the same pc. > > the normal solution would be to add in some way the second multicast to the > socket created by the port and select packets based on the IP from which > you > received them... > > my workaround for a similar application, for now, was to change the > incoming > ports of the streams with an outside program, so I could declare the > sockets > in the same time, but on different ports. > > > On Wed, Mar 10, 2010 at 8:01 PM, Ke Yu <[email protected]> wrote: > > > Hi All, > > > > I'm trying to open two udp multicast streams simultaneously in one > process. > > The first call to av_open_input_file has been working fine. However, the > > second call to av_open_input_file always failed with return value -5 I/O > > error. Is this by design or just a bug? Is there anyway to work around > this > > issue? > > > > There's once more piece of information: if I start more than one FFMpeg > > instances on the same machine to open different udp multicast streams, > the > > second one failed with IO error. > > > > Thanks! > > _______________________________________________ > > libav-user mailing list > > [email protected] > > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > > > > > > -- > Bogdan COANDA > > AIESEC Iasi > AIESEC in Romania > > Mobile: +40-724 013 068 > E-mail: [email protected] > Website: www.aieseciasi.ro > > > _____________________________________________________________________________ > AIESEC - The international platform for young people to discover and > develop > their potential > _______________________________________________ > libav-user mailing list > [email protected] > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
