[FFmpeg-user] using spdif demuxer

Nicolas George nicolas.george at normalesup.org
Thu Aug 2 19:46:34 CEST 2012

Le sextidi 16 thermidor, an CCXX, Sam Hawkens a écrit :
> I want to playback sound from a USB soundcard's S/PDIF input with ffmpeg.
> So far I managed to get this working straight forward with PCM:
> ffmpeg -ar 48000 -ac 2 -f alsa -i plughw:1,0 -f alsa hw:0,0
> Now I want to use this also for ac3 or dts. -f alsa option will not work
> together with -acodec ac3.
> -f spdif should in my understanding be the right selection for spdif input
> demuxer, but this will not go together with alsa plughw:1,0. So how can I
> do this?

S/PDIF is not implemented in FFmpeg's ALSA muxer and demuxer. Patches are


  Nicolas George
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