[FFmpeg-user] filter to "combine" audio tracks (audio mixer)

[Roger Pack]

> Yes a mixing audio filter (2 in, 1 out) is the right solution.
>
> Audio filtering is a work in progress, many bits have been already
> committed and we're close to integration (where "close" is hardly
> definable, as it depends on many variable factors including my
> available free time).

Good to hear.  I'll put a $150 bounty on a working system that can two
audio inputs and combines them into one (ex: 1 mono + 1 stereo -> 1
stereo).
I have no idea how so that's my contribution :)
-roger-