Android video-to-image app?

I realize this is a question better suited for an Android or phone discussion board, but I have not been able to find what I want there.

What's a good app (or good process to use) to capture good-quality images from an Android video?

I'd think there would be a good app or ten for that, and they're not; I've tried installing several and they crash, are poorly-documented, or so ad-laden they're frustrating to use.

I ask for Android in general, but mine is a Pixel 3a if that makes a difference.

Not all phones have it but mine if I play a video tap screen twice with knuckle save a photo