[FFmpeg-user] concat filter

[Carl Zwanzig]

On 7/4/2022 8:04 AM, Leo Butler via ffmpeg-user wrote:
> Question: Is there a better way to sidestep the problem of changing
> width or height? e.g. does ffmpeg already have a way to handle width or
> height changes?

How much of a change is there? Are we talking about varying by a few pixels 
or something like 720 to 1080?

For dealing with minor size changes, an option is a filter chain to crop 
larger frames to the target size then center/overlay the result on a 
target-sized black background.

z!