Command line wrapper for mplayer to make rifftrax syncing easier

mplayer-rifftrax.py

#!/usr/bin/env python

import sys
import time
import subprocess

def main(vid, aud):
    try:
        vidproc = subprocess.Popen(["mplayer", vid], stdin=subprocess.PIPE)
        audproc = subprocess.Popen(["mplayer", aud], stdin=subprocess.PIPE)

        while True:
            key = getch()
            if ord(key) == 3:
                raise KeyboardInterrupt
            elif key == 'd':
                print "Delaying video..."
                vidproc.stdin.write(' ')
                time.sleep(0.1)
                vidproc.stdin.write(' ')
            elif key == 'a':
                print "Delaying audio..."
                audproc.stdin.write(' ')
                time.sleep(0.1)
                audproc.stdin.write(' ')
            else:
                vidproc.stdin.write(key)
                audproc.stdin.write(key)
    except KeyboardInterrupt:
        pass
    finally:
        vidproc.kill()
        audproc.kill()

class _Getch:
    """Gets a single character from standard input.  Does not echo to the
screen."""
    def __init__(self):
        try:
            self.impl = _GetchWindows()
        except ImportError:
            self.impl = _GetchUnix()

    def __call__(self): return self.impl()


class _GetchUnix:
    def __init__(self):
        import tty, sys

    def __call__(self):
        import sys, tty, termios
        fd = sys.stdin.fileno()
        old_settings = termios.tcgetattr(fd)
        try:
            tty.setraw(sys.stdin.fileno())
            ch = sys.stdin.read(1)
        finally:
            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
        return ch

class _GetchWindows:
    def __init__(self):
        import msvcrt

    def __call__(self):
        import msvcrt
        return msvcrt.getch()

getch = _Getch()
    
if __name__ == "__main__":
    main(sys.argv[1], sys.argv[2])

Usage:

./mplayer-rifftrax.py video_file audio_file

Once playing, the usual mplayer keyboard commands are sent to both video and audio players.

Additionally, press 'd' to delay the video by 0.1 seconds, and 'a' to delay the audio by 0.1 seconds.