Youtube is currently converting its videos WebM, a format promoted by Google that has the famous video site online.

While H.264 is quite rependu, Google prefers to turn to WebM for videos, a format he considers more open and less prone to incompatibilities.

Mountainview firm thus indicates that now all the videos uploaded to YouTube's converted WebM. Of course, Google does not intend to stop there and aims to encode all the videos on Youtube WebM format.

Already, 99% of the most popular videos on YouTube are format WebM, which represents about 30% of videos. Youtube focuses primarily on the conversion of new videos uploaded WebM, and when the activity is lower, the old videos are also encoded in this format.

Anyway to make content available to YouTube for more, Google says it will continue to support H.264 while developing a media player HTML5 in parallel.