Will youtube 再生時間 購入 Ever Rule the World?
https://telegra.ph/4-Dirty-Little-Secrets-About-the-%E3%82%A4%E3%83%B3%E3%82%B9%E3%82%BF-%E3%82%B7%E3%82%A7%E3%82%A2-Industry-11-09
An additional downside from the mpeg format is you actually need time and complicated hardware and software to transform basic movie into mpeg.