intersection.py

import glob

presets = {}

preset_list = ["default","fastfirstpass","hq","lossless_fast","lossless_max","lossless_medium","lossless_slow","lossless_slower","lossless_ultrafast","max","normal","slowfirstpass"]

for preset_file in preset_list:
	current = map(lambda x: x.split("="), open(preset_file + ".ffpreset").read().splitlines())
	preset_name = preset_file.replace(".ffpreset", "")
	presets[preset_name] = {}
	for key, value in current:
		presets[preset_name][key] = value
		
intersection = set([])
first = 0
for preset in presets.keys():
	if first == 0:
		for key in presets[preset].keys():
			intersection.add(key)
		first += 1
	else:
		intersection &= set(presets[preset].keys())
		
for preset in presets.keys():
	print presets[preset]["cmp"]