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

[Nathan Lewis]

On Thu, Aug 1, 2013 at 11:39 AM, Nathan Lewis <nlewis at crawford.com> wrote:

> On Thu, Aug 1, 2013 at 10:06 AM, Carl Eugen Hoyos <cehoyos at ag.or.at>wrote:
>
>> Do you mean the output files are binary identical
>> no matter if you use the original line or
>> avio_wb24(pb, 0xF);
>> ?
>>
>
> Sorry, I didn't.  I meant that no matter what line I used the resultant
> output files had the same audio configuration with only channel one
> enabled.  Channels 2-4 were disabled.  As for the files being binary
> identical md5 returns different checksums.
>
>
>> Alternatively, you could test (unchanged) 454c5d1
>
>
>  This too results in a file with only channel 1 (QT player "Sound Track
> 1") enabled.  Channels 2-4 are disabled.
>
>
I wanted to circle back to this to see if we can pick up where we left off.
 Do you have any other suggestions for testing?

It would be great if there was a switch to override the default behavior.