Need help to crop border from a bunch of GIFs (lemmy.world)

submitted 1 year ago* (last edited 1 year ago) by Shady_Shiroe@lemmy.world to c/python@programming.dev

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I am assisting in making a wiki for an old game, and we ripped the avatar GIFs from the games shop and want to have a catalog of them. What I need to do is to crop all the borders which are identical from 3,170 GIFs and maybe make background transparent.

I haven't used python in years, but I managed to cobble up something that almost works as a single image test, only issue is that it crops and outputs only the first frame:

from PIL import Image

if __name__ == "__main__":
    input_loc = "AvatarShopImages/80001.gif"
    output_loc = "Output/80001.gif"
    im = Image.open(input_loc)
    im = im.crop((4, 4, 94, 94))
    im.save(output_loc)

If it looks weird, it is because I copy/pasted some code and edited a lot out of it.

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[-] Shady_Shiroe@lemmy.world 3 points 1 year ago

Let me clarify, there are 3 THOUSAND GIFs that need to be cropped

[-] agitated_judge@sh.itjust.works 7 points 1 year ago

for i in $( ls *.gif ); do fmpeg -i $i -vf "crop=w:h:x:y" cropped_$i; done

This runs on Linux/Mac or on WSL on windows Make sure there are no spaces in the filenames.

[-] cowfodder@unilem.org 3 points 1 year ago* (last edited 1 year ago)

If they're all the same size and need cropped to the same size you could drop them all in one folder and run the ffmpeg command with *.gif. That should do all of them.

You'd have to find a way to automate the output though.