def mask_hash(hash, show=6, char="*"):
    masked = hash[:show]
    masked += char * len(hash[show:])
    return masked
Get the duration of total frames in the track
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/auth/hashers.py/mask_hash--crossover with--dataset/ETHPy150Open ucbvislab/radiotool/radiotool/composer/track.py/Track.duration