[Cin] removing letter boxing while preserving aspect

Terje J. Hanssen terjejhanssen at gmail.com
Sun Mar 3 21:28:36 CET 2024

Den 03.03.2024 14:40, skrev Rob Prowel via Cin:
> I have 3:2 content that is saved in a 4:3 frame with black bands at 
> the top and bottom.
> I want to remove the banding such that the output is a 3:2 resolution 
> I've tried playing with the crop filter but the black bands remain, 
> and the camera automation can remove the banding by zooming in, but 
> then the left and right image sides get cropped out of the output.
> Is there a tutorial for this exact scenario?

You can possibly try a test on a file or clip copy using ffmpeg "crop 
and resize".
If I understand the problem right, keep the original w(idth) of the 
video resolution and use h=w*2/3=w/1.5

ffmpeg -i input.mp4 -vf "crop=w:h" output.mp4

according to this article example

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