[FFmpeg-user] Overlay images to frames in video

[Michael Koch]

Am 08.04.2021 um 09:27 schrieb Rainer M Krug:
> ffmpeg -i ‘background_movie.avi' -i 'overlay.avi' -filter_complex 
> 'overlay=0x0’ ‘final_movie.avi’ 

I think overlay=0x0 is not doing what you expect. It does set the x 
option to hexadecimal 0, and it doesn't specify the y option. In your 
case that doesn't matter because the default values are 0. You could 
write 'overlay=x=0:y=0' or you could simplify it to just 'overlay' 
without any options.

Michael