gistfile1.txt

class MP4Processor(Processor):
    sync = [validate_mp4, webm, ogv]
    async = [png_frame]
    time = 300

    def resolution(self, file):
        # Some computation 
        file.resolution = 1234

    def audiostreams(self, file):
        # Some computation 
        file.audio = True

    def loop(self, file):
        # Some computation 
        file.loop = True if length < 30 else False