On October 17, 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 are automatically converted into 720/24p VP6 Flash video. In March 2008 Vimeo upgraded their HD video service to support video frame rates up to 30 frame/s, but Adobe Flash player’s lack of full graphical acceleration on some platforms resulted in bad performance for many users.
Consequently, Vimeo reverted to their previous limitation of 24 frame/s only a month later. Non-HD videos do re-encode at a maximum of 30 frame/s and they also have significantly higher bitrates than other competing video sharing sites. Non-Plus users can upload up to 500 MB of videos per week, and up to 1 HD video per week (additional HD videos uploaded within the same week are re-encoded only in SD).