For best results install HTML5ify. It will force popular sites to use HTML5 instead of Flash.
This extension doesn't control Flash or Silverlight audio. It only controls HTML5 audio and video tags.
Dear Google. If you have a spare Chromebook Pixel please send it to me so I can test it on Chrome OS ;)
Why I dont hear any difference?
This extension works only with HTML5 video or audio. If video or audio is played with flash then EQ will not work.
Is there any way to force Youtube to use HTML5 video instead of Flash?
Yes it is. Install HTML5ify
extension. However not all Youtube videos are in HTML5 :(
Will it work on Mac/Windows/Linux/Chrome OS?
Yes it will.
Better support for dynamicly loaded audio/video tags
Support for Flash/Silverlight (?)
All code is open source and dual licensed under GPL and MIT. Check the individual licenses for more information.