Sage Advice About Youtube 觀看次數 From a Five-Year-Old

http://angelokwma361.iamarrows.com/9-ted-talks-that-anyone-working-in-youtube-mai-ding-yue-should-watch

There are 3 simple movie file styles over the internet. Mpeg, AVI and Quicktime. I feel the Quicktime file type is the most popular considering that plenty of large entertainment and information sites utilize it