Encrypted Media Extensions
Netflix supports HTML5 video using EME with a supported web browser: Chrome, Firefox, Microsoft Edge, Internet Explorer (on Windows 8.1 or newer), or Safari (on OS X Yosemite or newer). YouTube supports the HTML5 MSE. Available players supporting MPEG-DASH using the HTML5 MSE and EME are NexPlayer, THEOplayer by OpenTelly, the bitdash MPEG-DASH player, dash.js by DASH-IF or rx-player.
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).