Yooouuutuuube emulator, just generates ffmpeg params with python

yooouuutuuube.py

# Example usage:

# youtube-dl https://www.youtube.com/watch?v=2XY3AvVgDns -o 'beyonce-countdown.mp4'
# python yooouuutuuube.py beyonce-countdown.mp4 beyonce-countdown-party.mp4 --width=1280 --height=720 --split=5 --delay=0.04
# open beyonce-countdown-party.mp4

import os
import sys

def yooouuutuuube(infile, outfile, total_width, total_height, n, delay):
    width, height = total_width/n, total_height/n
    cmd = 'ffmpeg '
    cmd += ('-i ' + infile + ' ') * n * n
    cmd += '-filter_complex "nullsrc=size='
    cmd += '%dx%d' % (total_width, total_height) + ' [v0]; '
    for tile in range(n*n):
        cmd += '[%d:v] setpts=PTS-STARTPTS+%f/TB' % (tile, delay * tile)
        cmd += ', scale=%dx%d [tile%d]; ' % (width, height, tile)

    tile = 0
    for row in range(n):
        for col in range(n):
            shortest = 'shortest=1:' if tile+1 == n*n else ''
            cmd += '[v%d][tile%d] overlay=%sx=%d:y=%d ' % (tile, tile, shortest, width*col, height*row)
            if tile+1 != n*n:
                cmd += ' [v%s]; ' % (tile+1)
            tile += 1

    cmd += '" -y %s' % outfile

    os.system(cmd)

if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser(description='Mosaic a video a la http://www.yooouuutuuube.com/v/?yt=BBAtAM7vtgc&width=192&height=120&flux=0&direction=top_right')
    parser.add_argument('infile')
    parser.add_argument('outfile')
    parser.add_argument('--width', type=int, help='width of input video')
    parser.add_argument('--height', type=int, help='height of input video')
    parser.add_argument('--split', default=4, type=int, help='number of tiles to divide into per side (4 will create a 16-tile video)')
    parser.add_argument('--delay', default=0.05, type=float, help='seconds to delay each tile by')
    args = parser.parse_args()

    yooouuutuuube(args.infile, args.outfile, args.width, args.height, args.split, args.delay)

Yeah I have no idea what I'm doing at all. But that's fine! This probably did work with python 2.3 or something. And all the bones to make it go brrr are there. Hell it probably works now. But I'm just making my first steps into learning coding. So this will be a good benchmark of my own progression through the learning process.