I want to make a YouTube video that I put in my second screen stay maximized while I go and do something in another window on my primary monitor.

Is this possible?

  • Just a suggestion since I do not have a dual monitor setup... have you tried using the HTML5 version of the youtube video? This will take up the fullscreen of the browser window and not the monitor.
    – phwd
    Oct 1, 2010 at 8:12
  • @phwd: it looks like the video i want does not support HTML5. :/
    – RCIX
    Oct 1, 2010 at 8:17
  • 1
    Which video a VEVO video ? Those would not work. For everything else you can use youtube.com/v/VIDEO_ID
    – phwd
    Oct 1, 2010 at 8:25
  • 1
    @phwd: that last thing you told me is just what i need, so if you promote it to an answer i can accept it. :)
    – RCIX
    Oct 1, 2010 at 8:35
  • done :D Glad to help out
    – phwd
    Oct 1, 2010 at 8:44

6 Answers 6


For everything other than VEVO (and certain copyright videos) you can use youtube.com/v/VIDEO_ID this should bring it to 100% browser view area.

  • That, in combination with chrome presentation mode, is pretty nice. Sep 25, 2014 at 2:15

This is something that flash decides locally, not some setting on Youtube.

If you run windows this article over on Lifehacker tells you where to download a modified dll that will allow flash to remain full screen when it does not have focus.

Another option might be to use a html5 able browser (Chrome, Safari for example) and tell Youtube to use that to play video. According to this page Full-screen support is partially implemented

The same page also has a link to lets you join the html5 beta program.

  • Is there any way to do this without needing to install an old and potentially vulnerable version of Flash?
    – RCIX
    Oct 1, 2010 at 8:19
  • @RCIX - See edit
    – Nifle
    Oct 1, 2010 at 8:32

I use VLC for that. It can even load playlists (might need some extra scripts for that to work). Also it skips advertisments.

Just press ctrl+n and enter youtube url.

also: https://superuser.com/questions/351612/how-to-watch-youtube-fullscreen-on-one-monitor-of-a-dual-monitor-display

  • Is that a web application? I guess not.... Sep 15, 2013 at 18:16
  • The original question doesn't seem to be web application related either, this is why I added a link to the more or less same question elsewhere. Google brought me here with the same question and I added a (in my opinion) better alternative. That is all.
    – gmk
    Sep 17, 2013 at 11:11
  • I guess you're right.... Sep 17, 2013 at 12:17

You can download and install Flash Keep FullScreen from this website : http://flash-full-screen-multiple-monitor.clangen.com/

It will keep full screen for the video, even if they are paused or finished. It will also work for other applications in fullscreen, like Flash games on Facebook.

Very easy to use and install. I hope it helps.


Youtube Leanback

I was looking after the same problem and found an awesome solution that works for all videos (VEVO as well).

Sign in to leanback, and it will give you a device code, which you can authorise by visiting http://google.com/device. After the authorization is successful, you can browse all your videos in full screen.

Also, signing in is optional, and you can browse through videos normally.


Update for Firefox 13 and later: type about:config in the address bar to go to the Firefox configuration settings. Paste full-screen-api.exit-on-deactivate into the search bar and double click the resulting option to change it's value to false.

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