[FFmpeg-devel] [PATCH]ffmpeg_opt: Warn if more than one -vf/-af option was specified

[Gyan]

On 14-01-2019 06:09 PM, Carl Eugen Hoyos wrote:
> Hi!
>
> This user mistake affects many people, attached patch fixes ticket #4184.
>
> Please comment, Carl Eugen

Partially useful. Users who do this, are usually not aware of how to 
apply multiple filters, and this syntax is their attempt. The error 
message doesn't leave them any wiser.  So, add a short note (or link) 
that multiple filters should be specified in a single chain, separated 
by commas.

Thanks,
Gyan