Here’s another little fix that I performed on one of my computers that I thought I would share. When I play videos on sites like Youtube, while in full screen mode, the video itself would often freeze after playing for a minute or two. The audio would continue to play correctly and if I would escape from full screen mode back to a normal video playing in the webpage, the video would begin to play correctly again.
It seems that using hardware video acceleration was the culprit. Once I disabled it, everything worked fine. This is easy to do. Just right mouse click on the video that is playing. 
Then a window should open that says Adobe Flash Player Settings. Select settings and then uncheck the box that says enable hardware settings. If you don’t have that option, you may need to click on the icon at the bottom right of that window. It looks like a monitor with a paintbrush. And that’s it. Your videos should now play in full screen mode without the video freezing.
5 Comments
We use D3D or DirectX to accelerate the fullscreen display in Flash. This sounds like a bug in your video card driver. Can you send me email with the output of dxdiag.exe run on your computer ? (run from dos command line or from start program text typin box, select “save all”). You can check the display tab to see what video card you have, then google for the download site for the latest drivers available for your card. It may already be fixed, most gpu companies update their drivers pretty frequently.
Thanks. I always use the latest nvidia drivers from their site. I have has do many spam comments with fake computer questions lately that I just realized yours looks legit. I will send you this info in a couple of days. I don’t believe I have tested this again since I have updated my drivers the last time. It’s great to see adobe, and you, seeking out people to help with this issue. I’m late in responding to this because I thought it was too good to be true. But I see your e-mail as actually at adobe.com and you don’t have a link to some other site. Thank you for your help.
Wow you folks are so lucky to even be able to exit full screen in order to resume your videos.
Thanks! You solved my problem.