Sometimes I'm only interested in a subset of anycodings_ffmpeg the audiochannels (e.g. However, if I skip the video part and do: ffmpeg -i 'a.mov' -map 0:1 -map_channel 0.1.0:0.0.0 -map_channel 0.1.1:0.0.1 -map 0:1 -map_channel 0.1.2:0.1.0 -map 0:1 -map_channel 0.1.3:0.2.0 -map 0:1 -map_channel 0.1.4:0.3.0 -map 0:1 -map_channel 0.1.5:0.4.0 -map 0:1 -map_channel 0.1.6:0.5.0 -map 0:1 -map_channel 0.1.7:0.6.0 -acodec pcm_s16le -ar 48000 -y -ss 00:00:00 -t 00:01:02.0400000 'a.audio.mov'Ī workaround could be to call FFmpeg twice, one for video and one for audio, but I'd ideally like to avoid that.I'm working with multichannel audio files anycodings_ffmpeg (higher-order ambisonics), that typically anycodings_ffmpeg have at least 16 channels. I get the correct video file but the audio file contains 7 tracks, each one containing 8 channels. I also want the audio file to have 7 tracks - one with the first 2 channels, and another 6 with each of the remaining channels.

I want to create 2 files from that - one with the video, and one with the audio. I have a file that has the following format (note the number of tracks and channels within each track): Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a.mov':ĭuration: 00:01:02.04, start: 0.000000, bitrate: 29083 kb/s

Channelmap ffmpeg examples