Perfect setup for multimedia web browsing

Hi guys,

I recently installed the Linterna Magica script in ABrowser thanks to the GreaseMonkey extension. Viewing embedded youtube movies is now more convenient.

As I still stumble upon videos that I cannot read on some websites, I was wondering if there was a 'perfect' setup that would guarantee that any video that can be viewed with Free software will indeed be displayed.

So are any other scripts, abrowser plugins, or whatever else that should be installed in order to have this 'perfect' setup?

Thanks!