[FFmpeg-user] overlay filter uses unmapped cover image

[Carl Eugen Hoyos]

Christian Ebert <blacktrash <at> gmx.net> writes:

> To me it still feels like a bug that -filter_complex 
> does not take -map 0:v:0 into account

-map can only work on the *output* of the filter, it 
has no effect on its input.

Carl Eugen