On Mon, Jan 21, 2019 at 14:01:52 -0500, Jim Shupert wrote: > if it is in 4 streams you can pick which to hear. > > My capture system captures 10bit unc mov video [0:0] ( 4ch_test.mov ) > and the 4 audio "tracks" are found in 1 stream as 4 channels [0:1.0 , > 0:1.1, 0:1.2, 0:1.3 ] [...]
Do you need the intermediate file 4s_b.avi? (I assume so, but your final file 4s_b.mp4 can be created in one step, if that is desired.) > ---------------------------:: make the ffv1 avi from the 10b mov capture . > 4s_b.avi > > ffmpeg -i 4ch_test.mov -vcodec ffv1 -level 3 -coder 1 -pix_fmt > yuv422p10le -aspect 4:3 -g 1 \ > -filter_complex "[0:a]pan=mono|c0=c0[a0]; [0:a]pan=mono|c0=c1[a1]; > [0:a]pan=mono|c0=c2[a2]; [0:a]pan=mono|c0=c3[a3]" \ > -map 0:v -map "[a0]" -map "[a1]" -map "[a2]" -map "[a3]" -map 0:d -c > copy -c:a pcm_s24le -f avi 4s_b.avi Your filter "[0:a]pan=mono|c0=c0[a0]; [0:a]pan=mono|c0=c1[a1]; [0:a]pan=mono|c0=c2[a2]; [0:a]pan=mono|c0=c3[a3]" is indeed a neat trick to separate your channels into streams. There's an easier way though: The "channelsplit" filter: https://ffmpeg.org/ffmpeg-filters.html#channelsplit The second filter ("[0:1] [0:2] amerge") is just fine for creating stereo from two separate channels. > https://trac.ffmpeg.org/wiki/AudioChannelManipulation Apparently, you read the section "stereo → 2 × mono files". My suggestion with the "channelsplit" is right below, in the section "stereo → 2 × mono streams". Actually, both filters will work either way, the examples are quite arbitrary, come to think of it. Cheers, Moritz _______________________________________________ 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".
