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Using my video player "Mplayer," I output cropped 150 by 100 pixel area frames from a 1080P version of the video I downloaded from here (with "youtube-dl"):
"Video shows fatal Brunswick shooting of Ahmaud Arbery"
https://www.youtube.com/watch?v=fIve50vSeLQ
...and then with this particular cropped frame I used my "mtPaint" image editor to scale it up to 640 by 480 pixels using one of the available algorithm choices and then tweaked the gamma, contrast and brightness just a little bit and saved it as the .jpg file you see above.
The smaller png version below is just the original 150 by 100 pixel cropped frame output by Mplayer without any modifications.
I have some animated gifs and videos, too, of what is going on here, but they are a bit larger than the allowable file sizes - if those numbers are still valid.