import bpy
for scene in bpy.data.scenes:
scene.render.image_settings.file_format = 'H264'
scene.format = 'QUICKTIME'
scene.color_mode = 'RGB'
scene.audio_codec = 'AAC'
scene.audio_bitrate = 128
scene.render.resolution_percentage = 100
I have no idea how to get this to work right