Quickly convert all Windows Media Videos to MP4 in a directory using ffmpeg.

video_converter.py

import os
import sys

# Install ffmpeg
# Put all your wmv in a directory
# Copy this file inside the directory
# run `python video_converter.py
############################################
WMV_DIR = "."
wmv_files = [ f for f in os.listdir(WMV_DIR) if os.path.isfile(os.path.join(WMV_DIR,f)) and 'wmv' in f ]

for f in wmv_files:
    input = f
    output = f.replace('wmv', 'mp4')
    print 'processing {} - > {}'.format(input, output)
    os.system('ffmpeg -i {} -strict -2  {}'.format(input, output))