List video durations on a Mac

vd.py

#!/usr/bin/env python

import os
import sys
import glob
from QTKit import QTMovie

TOTAL_DURATION = 0

def format_duration(duration):
    return "%5d:%02d" % (duration / 60, duration % 60)

def process(fn):
    global TOTAL_DURATION

    attributes = {'QTMovieFileNameAttribute': os.path.abspath(fn)}
    movie, error = QTMovie.movieWithAttributes_error_(attributes, None)
    if error or not movie:
        print error.description()
        return
    duration = movie.duration()[0]/movie.duration()[1]
    TOTAL_DURATION += duration
    print format_duration(TOTAL_DURATION), format_duration(duration), fn

def main(files):
    for fn in files:
        process(fn)

if __name__ == '__main__':
    if len(sys.argv) > 1:
        main(sys.argv[1:])
    else:
        main("*.mp4")