def isValidQuicktimeVideoURL(field_data, all_data):
    uc = URLMimeTypeCheck(('video/quicktime', 'video/mpeg',))
    try:
        uc(field_data, all_data)
    except URLMimeTypeCheck.InvalidContentType:
        raise ValidationError, gettext("The URL %s does not point to a valid QuickTime video.") % field_data
Custom gmtime because yada yada.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-0.96/django/core/validators.py/isValidQuicktimeVideoURL--crossover with--dataset/ETHPy150Open KoffeinFlummi/Chronyk/chronyk/chronyk.py/_gmtime