Easy way to make an animated GIF from video file.

agif.py

#!/usr/bin/env python

import os
import shutil
import sys
import getopt

# animated GIF maker
# typical usage: ./agif.py -i input.mp4 -w 640 -f 8 -t 00:00:08.50 -l 00:00:07.50 -d 10 -o output.gif

USAGE_HELP = """agif.py usage:
 -h, --help                  - prints this usgae help
 -i <name>, --input=<name>   - input source video
 -w <width>, --width=<width> - width of the resulting GIF
 -f <fps>, --fps=<fps>       - how much frames from 1 second will be captured
 -t <sec>, --time=<sec>      - capture offset
 -l <sec>, --length=<sec>    - capture length
 -d <ms>, --delay=<ms>       - delay between GIF frames
 -o <name>, --output=<name>  - resulting GIF name
"""

if __name__ == "__main__":
    try:
        opts, args = getopt.getopt(sys.argv[1:], "hi:w:f:t:l:d:o:",
            ["help", "input", "width", "fps", "time", "length", "delay", "output"])
    except getopt.GetoptError as e:
        print e
        print USAGE_HELP
        exit(1)
    
    input, output, delay = None, "output.gif", 20
    command = "ffmpeg"
    
    for opt, arg in opts:
        if opt in ("-h", "--help"):
            print USAGE_HELP
            exit(0)
        elif opt in ("-i", "--input"):
            input = arg
            command = command + " -i \"" + arg + "\""
        elif opt in ("-w", "--width"):
            if int(arg) > 0:
                command = command + " -vf scale=" + arg + ":-1"
        elif opt in ("-f", "--fps"):
            if int(arg) > 0:
                command = command + " -r " + arg
        elif opt in ("-t", "--time"):
            command = command + " -ss " + arg
        elif opt in ("-l", "--length"):
            command = command + " -t " + arg
        elif opt in ("-d", "--delay"):
            if int(arg) > 0:
                delay = int(arg)
        elif opt in ("-o", "--output"):
            output = arg
    
    if not input:
        print USAGE_HELP
        exit(1)
    
    shutil.rmtree("agif-frames", True)
    os.mkdir("agif-frames")
    
    command = command + " agif-frames/frame-%08d.png"
    os.system(command)
    
    command = "convert -delay " + str(delay) + " -loop 0 agif-frames/frame-*.png -layers Optimize " + output
    os.system(command)
    
    shutil.rmtree("agif-frames", True)