Reconstruct GIF header from mobile QQ's stickers.

convert_mobile_qq_stickers.py

#!/usr/bin/env python3
from sys import argv

"""
Reconstruct GIF header from mobile QQ's stickers.
Get the stickers in /sdcard/Tencent/QQ*/.emotionsm/
"""


def convert_bytes(data):
    prefix = b'GIF89a\xc8\x00\xc8\x00'
    return prefix + data[len(prefix):]


def convert_file(path_in, path_out):
    open(path_out, 'wb').write(convert_bytes(open(path_in, 'rb').read()))


if __name__ == '__main__':
    convert_file(argv[1], argv[1] + '.gif')