In an S3 bucket, take all gifs and overwrite them with a single frame of the same gif.

overwrite_gifs.py

import boto3
import random
from PIL import Image

s3 = boto3.resource('s3')
bucket_name = "my-bucket"
bucket = s3.Bucket(bucket_name)
exception_file_name = "images/7df7a570-2348-11e9-8b57-e3db97667bbd.gif"

files_to_remove = []

for key in bucket.objects.all():
    file_name = key.key

    if file_name == exception_file_name:
        continue

    if "images/" in file_name and ".gif" in file_name:
        files_to_remove.append(file_name)

print(f"{len(files_to_remove)} files to convert")

for file in files_to_remove:
    print(f"Working on File {file}")
    # get and save the gif locally
    tmp_file = 'tmp_gif.gif'
    tmp_single_gif = 'tmp_single.gif'
    bucket.download_file(file, tmp_file)

    #Open image and get single frame and upload back to s3
    with Image.open(tmp_file) as im:
        num_frames = im.n_frames
        if num_frames == 1:
            print("Gif is already single Frame GIF")
            continue
        random_frame = random.randint(0,num_frames-1)

        #get random frame
        im.seek(random_frame)
        im.save(tmp_single_gif)

        bucket.upload_file(tmp_single_gif, file)

print(f"All Files Cleaned up in bucket {bucket_name}")