videojs/video.js — pull request #1132 by H1D (2014-04-07 14:29:23+00:00)
Title: playbackRate support

this fixed #840

But unfortunately I broke tests and don't know how to fix them =(
```at file:///Users/user/proj/video.js/test/unit/player.js:41: The "playbackRate" method is not available on the playback technology's API```