[FFmpeg-user] Is mixing of audio channels happening by default in ffmpeg?

Tom Evans tevans.uk at googlemail.com
Thu Jul 18 15:18:00 CEST 2013

On Thu, Jul 18, 2013 at 2:07 PM, Sam Marrocco
<smarrocco at ringsidecreative.com> wrote:
> I have an uncompressed Quicktime with 8 tracks of audio (in addition to it's
> one video and one Timecode track). I am transcoding it to Quicktime Prores
> with the following command line (and results):
> "ffmpeg-20130507-git-399f6ef-win64-static\bin\ffmpeg.exe" -i
> "C:\Users\root\Desktop\MultiChannel.mov" -vcodec prores_ks -pix_fmt
> yuv444p10le -profile:v 3 -acodec copy -t 1 -f mov
> "D:\\MultiChannel\MultiChannel.mov"

Add "-map 0" to your command line

See example 4 on this page:




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