I've used this site in the past to test various video formats and sizes: http://www.sample-videos.com/ http://www.sample-videos.com/ It is basically the "Big

I've used this site in the past to test various video formats and sizes: http://www.sample-videos.com/ http://www.sample-videos.com/ It is basically the "Big Buck Bunny" video in many sizes, durations and formats.