firefox && HTML5 && flash

[Lena at lena.kiev.ua]

> From: Warren Block

> On Fri, 18 Oct 2013, Matthias Apitz wrote:
> 
> > I have a very recent 10-CURRENT with firefox 24.0.1 and Linux flash
> > as .mozilla/plugins/npwrapper.libflashplayer.so;
> > Flash content, for example from http://www.telesurtv.net/ plays fine;
> > Youtube plays also fine, but only when Linux flash is removed from
> > .mozilla/plugins; if npwrapper.libflashplayer.so is there, Youtube
> > complains.

> Set dom.ipc.plugins.enabled to false in about:config, and then restart 
> Firefox.  Do the opposite to switch back afterwards.  It would be nice 
> to find an easier way to do this.

In about:config create (right-click anywere, New) two boolean variables
with value "false" and names:
dom.ipc.plugins.enabled.libflashplayer.so
dom.ipc.plugins.enabled.npwrapper.libflashplayer.so

and restart Firefox.
With these (and dom.ipc.plugins.enabled default true),
plugin-container is not used only for Flash.