Flash not long ago (for the world of computers it's a bit longer) was considered to be a real shame of Linux systems, working very slow and unstable. These days we have fortunately far behind and thanks to the new standard browsers, you can watch videos on the site completely without the Flash.

The easiest way to get this effect is use the Greasemonkey script, which can be found in Mozilla's Add-on directory. Later we just need to install additional script from here and restart Firefox.

From now on, videos will be played using the player embedded on the page (as in the picture above).

One of its many advantages is the possibility of much larger configuration, which allows, for example, pre-select in quality of the videos. There are also new links, which allow you to quickly download the material in one of the desired quality.

source: ubuntugeek.com