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

[Tom Evans]

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:

http://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20use%20-map%20option

Cheers

Tom