Compute total number of hours of all avi, mkv and mp4 videos on a directory.

gistfile1.py

import os
import sys
from hachoir_metadata import extractMetadata
from hachoir_parser import createParser


def getinfo(rootdir, extensions=(".avi", ".mp4", ".mkv")):
    if not isinstance(rootdir, unicode):
       rootdir = rootdir.decode(sys.getfilesystemencoding())
    for dirpath, dirs, files in os.walk(rootdir):
        dirs.sort() # traverse directories in sorted order
        files.sort()
        for filename in files:
            if filename.endswith(extensions):
               path = os.path.join(dirpath, filename)
               yield path, extractMetadata(createParser(path))

total_minutes = 0
no_duration = 0
for path, metadata in getinfo(u"/Volumes/Cloud/TV Series"):
    if metadata.has('duration'):
        minutes = int(metadata.get('duration').total_seconds() / 60)
        total_minutes += minutes
        print "TOTAL: %s" % total_minutes
    else:
        no_duration += 1

print "TOTAL: %s hours" % (total_minutes / 60)
print "NO DURATION: %s" % no_duration