Sean wrote: > Greetings, > > I would like to mix two audio streams into one, > the format of the audio streams is G.711 or G.723 or > G.729, > can anyone help me on this topic? > is it possible for using FFMPEG? > if so, how to do? > > Thanks a lot, > Sean. > > No, ffmpeg doesn't support G723.1 or G729. MvH Benjamin Larsson