為了改善您的使用體驗,本網站正在進行維護,部分功能暫時無法使用。若本站的文件無法解決您的問題,想要向社群發問的話,請到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 發問,我們的社群成員將很快會回覆您的疑問。

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

fullscreen unavailable

  • 4 回覆
  • 7 有這個問題
  • 5 次檢視
  • 最近回覆由 RotorNut

more options

after updating to Firefox 49.0.2 when i click on the full screen button in an embedded video using the html5 player it shows a small message "Full screen unavailable". I've tried starting Firefox in safe mode and still have the problem. I have not added or removed any add-ons.

after updating to Firefox 49.0.2 when i click on the full screen button in an embedded video using the html5 player it shows a small message "Full screen unavailable". I've tried starting Firefox in safe mode and still have the problem. I have not added or removed any add-ons.

被選擇的解決方法

ok here is the funny part for days I couldn't get any video on youtube to go full screen now for some reason the problem has just went away on its own.

從原來的回覆中察看解決方案 👍 0

所有回覆 (4)

more options

Hello,

you have the Flash Player installed? Thank you for understand.

Best regards, David-Walczysko Volunteer supporter

more options

Yes have flash installed, but some videos default to the html5 player

more options

hi, I think it's not due to firefox. A lot of websites with embedded videos block the fullscreen support.

A question : if you go to youtube.com, can you access to fullscreen videos?

more options

選擇的解決方法

ok here is the funny part for days I couldn't get any video on youtube to go full screen now for some reason the problem has just went away on its own.