tweets-media.py

#!/usr/bin/env python3

import os
import json

with open('tweets.js') as f:
	tweets_str = f.read()

# assume the prefix is universally the same ('window.YTD.tweets.part0 = ')
tweets_json = json.loads(tweets_str[26:])

tweets_media = [{
	'tweet': {
		'id': tweet['tweet']['id'],
		'id_str': tweet['tweet']['id_str'],
		#'entities': tweet['tweet']['entities'],
		'extended_entities': tweet['tweet']['extended_entities'],
	}
} for tweet in tweets_json if 'media' in tweet['tweet']['entities']]

with open('./tweets-media.js', 'w') as f:
	f.write('window.YTD.tweets.part0 = ')
	f.write(json.dumps(tweets_media, indent=4))