https://trac.ffmpeg.org/wiki/AudioChannelManipulation here it is perfectly explained this in version 2.8 and earlier applies to ffmpeg and ffmplay
2016-05-05 19:11 GMT+02:00 Moritz Barsnick <barsn...@gmx.net>: > On Tue, May 03, 2016 at 16:23:58 +0200, juan carlos Rebate wrote: > > >ffplay -i rtp://239.0.0.111:8208 -ac 0 > > "-ac" selects the number (amount) of audio channels to output, as in > "stereo to mono". I'm not even sure it applies to ffplay. And "-ac 0" > doesn't make sense in that context. > > If you want to select a different audio *stream* to play (please note > the semantic difference between channels and streams), you need to use > the "-ast" option: > > -ast stream_specifier select desired audio stream > > You can also cycle through the available audio streams interactively at > run time by pressing the 'a' key. > > Moritz > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
