Video's won't go into full screen

Solution 1:

I had the same problem, but i found a solution. I am using Google Chrome as default browser. When I updated it to Google Chrome 20 it also installed Flash 11.3. So you just need to turn off Flash 11.3 and turn on Flash 11.2. To do that: type in adress bar about:plugins Then at the top left corner click Extended (or smth like that) Find a Flash and you will see here 2 files. Then you need just to turn off 11.3 version and turn on 11.2 version and also restart your browser. That just worked for me!