Watch YouTube Videos at 60 FPS in Firefox

Not everyone wants to use Chrome. Unfortunately, YouTube’s new 60 FPS feature only works on Chrome (and apparently some versions of IE, lolwut?). This is an artificial limitation however. With a small config tweak, you can make Firefox play 60 FPS videos, plus fix all the other broken shit in YouTube on Firefox. Get the video, or text instructions after the break. 

[youtube http://youtu.be/0i4m7TcE6F0]

The process is super easy, and only takes a few seconds. The stuttering you see in the video above was an issue with my screen recorder, not Firefox, that doesn’t happen in real life.

Don’t want to watch the video? Alright, here’s some text instructions.

  1. Open a 60 FPS YouTube video in a new tab for testing. I used this video, but the video above is also 60FPS, so use that one if you want.
  2. Go to https://youtube.com/html5 and notice that three of the technologies are missing.
  3. In a new tab, go to about:config. Bypass the warning and access the settings panel.
  4. Search for media.mediasource using the built in search box.
  5. You should see four options. For me, two were set to true, and two were set to false.
  6. Set all of the options to true by double-clicking on the ones that are false.
  7. Go back to your YouTube HTML5 test tab and refresh. All of the boxes should be checked.
  8. Go back to your test video and refresh. 60 FPS should be working.
  9. If everything works correctly, close your about:config tab.
  10. Enjoy!

Update: On some computers, the HTML5 player may not be turned on by default. If so, this process will not work. To remedy this, simply go to https://youtube.com/html5 and click the large blue “Request the HTML5 player” button.

I used OS X to test and demonstrate, but it should work on all platforms, Windows, Linux, and OS X. Additionally, the text on the config page in incredibly small by default, so if you can’t read it, just press Ctrl-= (Cmd-= on OS X) to zoom in.

It took me quite a while to figure this out from searching, so I figured I would make a video and a post about it. Enjoy watching your videos in 60 FPS without being forced to use Chrome.

  • Colton

9 Replies to “Watch YouTube Videos at 60 FPS in Firefox”

    1. I tried this on a couple other computers to see what might be wrong. I did find that on some systems, the HTML5 player is disabled by default. To remedy this, go to https://youtube.com/html5 and click the big blue “Request the HTML5 player” button. I have updated the original post to reflect this discovery. If it’s still not working, let me know.

      1. Tried that and afterward my browser started acting funny… Had to reset it to default because startups were becoming very slow and videos were not wanting to load. I think I’ll just hold off until FF37 comes out.

    1. Hmm, that certainly is odd. What Operating System are you on?
      Update: I tried this on a couple other computers to see what might be wrong. I did find that on some systems, the HTML5 player is disabled by default. To remedy this, go to https://youtube.com/html5 and click the big blue “Request the HTML5 player” button. I have updated the original post to reflect this discovery. If it’s still not working, let me know.

  1. So I followed the instructions and the YouTube HTML5 test was showing that everything was enabled but even after a refresh and fresh restart of the browser I am not getting the 60fps option in the YouTube Player. Running Win7 x64 and the full release of FireFox 36. Any idea as to why or what I can do?

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