The fullscreen button on Youtube videos will not work.
For some reason the full screen button on Youtube videos not on the Youtube site will not work. A pop up message appears, but the information that is linked is outdated. It references the about permissions page which was removed.
Modified
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The about:permissions page is gone, but "permissions" is still in Firefox, reached via Page Info for the page that is being viewed.
I know, but I do not see an option for full screen.
P.S. Let me make it very clear that on Youtube the full screen button works fine, but not on other sites.
Also this just started yesterday.
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The full screen permission has been removed from "Tools > Page Info" and has been replaced by the full screen API that displays a notification to make you aware of the switch to full screen mode.
Do you mean that the full screen button doesn't work with embedded Yahoo videos on other Web Developer.
It is possible that the video is embedded in an iframe and that the outermost iframe is missing the allowfullscreen="true" attribute that Firefox needs. You can set dom.event.contextmenu.enabled to false as a workaround. Then you have a Full Screen item in the right-click context menu.
Is it possible to post a video here so you can see what I am referring to?
For example I posted (Using the Youtube button in the editor) this video on my forum: https://www.youtube.com/watch?v=CwxGDdsI_bU
[youtube] CwxGDdsI_bU /youtube
When I press the fullscreen button, it does not work. Also it is greyed out.
Modified
Exactly I believe my issue is not with Firefox, but with my forum provider.
Can you post a link to that forum page that includes this link?
Then we can check the page code.
See also:
- [/questions/1116018] Youtube video No fullscreen option in permissions
So why can't I use full screen on youtube. This just started. Using the menu does nothing, still won't open in full screen. So how do I fix this?