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Firefox's message whenever enter fullscreen in YouTube videos plus slow exit fullscreen animation

  • 4 replies
  • 1 has this problem
  • 275 views
  • Last reply by cor-el

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So I just return to Firefox after a long time. There are things to catch up. When I enter fullscreen for YouTube videos (not the website fullscreen, F11), there is slide down message about YouTube is now in fullscreen and a button to exit fullscreen right away. How to not continue receiving such message? Also, when I exit fullscreen, YouTube re-scale and the animation is quite slow, you can feel the video frame is exiting full-screen and downsizing to smaller frame. Is there an option for me make it enter/exit fullscreen w/o such notice message or animation?

Modified by BnL_Nexus

Chosen solution

To avoid confusion, that would be these two prefs:

  • full-screen-api.transition-duration.enter: "0 0"
  • full-screen-api.transition-duration.leave: "0 0"
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All Replies (4)

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You can modify some settings to shorten the notification or hide it completely. But I'm not sure that will help with the issue of exiting fullscreen. You can look at settings in that same area to see whether any of them help.

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste FULL-S and pause while the list is filtered

(3) Double-click the full-screen-api.warning.delay preference and edit the value to 0 (that's a zero)

(4) Double-click the full-screen-api.warning.timeout preference and edit the value to 200 (that's 2 tenths of a second, just a very brief blip)

(5) There are three preferences starting with full-screen-api.transition. that could affect the other issue, but I've never experimented with them myself.

If you change them in a way that is worse, you can right-click > Reset to restore their default values.

Let us know what you come up with.

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the Full-scree-api.transition-enter and -leave should be set to 0 0 (2 zeros) and that pretty much almost remove the animation. Thank you for your help with the fullscreen message :D

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Please Mark the Solution that Solved your issue so others can find it. Thanks

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Chosen Solution

To avoid confusion, that would be these two prefs:

  • full-screen-api.transition-duration.enter: "0 0"
  • full-screen-api.transition-duration.leave: "0 0"