Change webcam ratio

When using OBS and Librem 13 v 4 webcam - I get on both side of the video black borders
I read that this is because the ration of the webcam is no 16:9
How do I change the ration of the webcam?

is it possible??

$ sudo dmesg | grep -i camera
$ sudo apt install v4l-utils
$ v4l2-ctl --list-devices

Otherwise you might continue to guess that you’re not already having 16:9 (1280×720@30) aspect ratio webcam sensor there (to use it as predicted). Rather there should exist some way to change thing(s) within OBS video settings, like base (canvas) resolution to 1280×720 (if helps, but not that I’m using OBS).

thank you.
I just didn’t see your post.
I’ll play with it over the weekend
Really appreciate your help
All the best.

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