Hi, As the reuse option is not available for RTP, I have modified ffmpeg source to add it. Unfortunately though the socket address is effectively reused between my encoder and decoder (no more binding errors), the decoder fails on av_read_frame with error -8a. I have not idea what can cause this.
So am trying to find another solution: is there is a way to open a AVFormatContext for both reading and writing ? I am hoping to use the socket for both encoding and decoding. Furthermore, is there a way to disable RTCP ? Thanks Renaud On Sun, 9 Sep 2018 at 18:29, Renaud Schoonbroodt < [email protected]> wrote: > Hi everyone, > > I am implementing a SIP user agent (softphone) in C++ where the media > encoding and decoding is handled by ffmpeg. I basically have one PCMU > encoder and one PCMU decoder. Taken separately they both works fine. > > To cope with NAT traversal issues, I need to do Symmetric RTP > https://tools.ietf.org/html/rfc4961 > > Basically it means that my encoder and decoder need to use the same port. > But when I enable both encoder and decoder one fails I guess because the > port can't be reused. Again, enabled separately it works like a charm. > > I see the existence of the "reuse_socket" AVOption for UDP socket. But I > have very little experience with the ffmpeg API and don't know how to > access UDPContext form an AVFormatContext or AVCodecContext. > > I have also seen the "reuse" flag for URL but it doesn't seem to work with > RTP. > > Does someone already succeed in doing this ? Am I looking in the right > direction ? > > Thanks > > Best regards, > > Renaud > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
