[FFmpeg-user] How to copy all of 5 audio streams to mp4 file

[Hans Carlson]

On Sun, 24 Feb 2019, Moritz Barsnick wrote:

> On Sun, Feb 24, 2019 at 01:19:20 +0100, Ulf Zibis wrote:
>>
>> Would you be capable to create such a patch? I really would appreciate
>> this.
>
> Attached. Use at your own risk. I only merged the changes and fixed
> obvious merge issues.

This is great.  What's the odds this (or something similar to/based on 
this) could be added to the official ffmpeg code base?