On March 31, 2010, the You Tube website launched a new design, with the aim of simplifying the interface and increasing the time users spend on the site.
Videos with progressive scanning or interlaced scanning can be uploaded, but for the best video quality, You Tube suggests interlaced videos be deinterlaced before uploading.
All the video formats on You Tube use progressive scanning.
The You Tube site had a page that allowed supported browsers to opt into the HTML5 trial.
Only browsers that supported HTML5 Video using the MP4 (with H.264 video) or Web M (with VP8 video) formats could play the videos, and not all videos on the site were available.
According to data published by market research company com Score, You Tube is the dominant provider of online video in the United States, with a market share of around 43% and more than 14 billion views of videos in May 2010..