HTML5 video
In 2010, in the wake of Apple iPad launch and after Steve Jobs announced that Apple mobile devices would not support Flash, a number of high-profile sites began to serve H.264 HTML5 video instead of Adobe Flash for user-agents identifying as iPad. HTML5 video was not as widespread as Flash videos, though there were rollouts of experimental HTML5-based video players from DailyMotion (using Ogg Theora and Vorbis format), YouTube (using the H.264 and WebM formats), and Vimeo (using the H.264 format).
Vimeo
On October 9, 2007, Vimeo announced support for high definition playback in 1280×720 (720p), becoming the first video sharing site to support consumer HD. Uploaded HD videos were automatically converted into 720/30p VP6 Flash video. Since August 2010, all videos are encoded into H.264 for HTML5 support. All videos uploaded before were re-encoded. Non-Plus users can upload up to 500 MB of videos per week, and up to one HD video per week (additional HD videos uploaded within the same week are encoded to SD).