[FFmpeg-user] Can I run TWO ffmpeg processes in parallel?

[Moritz Barsnick]

On Sun, Nov 15, 2015 at 14:37:53 +0100, Henk D. Schoneveld wrote:
> > The other replies are correct.  You can, with one caveat.  If you want
> > to run multiple encoding passes over a video, some stats must be stored
> > in a stats file.  You must give a unique name for the stats file for
> > each parallel process you are running.
> This applies only when doing 2-pass encoding AFAIK

The vidstab{detect,transform} filter pair also uses intermediate files
to store analysis results. Again, they use a default filename, but that
can be changed. Yes, in a sense, this is the mentioned "2-pass
encoding". ;)

Moritz