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

HTML5 does not work in YouTube

more options

I use Linux and cannot get Adobe Flash to work anymore so we want to use HTML5. As recommended in Firefox I added that and no youtube videos work even tho it says HTML5 is used when it can be.

I use Linux and cannot get Adobe Flash to work anymore so we want to use HTML5. As recommended in Firefox I added that and no youtube videos work even tho it says HTML5 is used when it can be.

所有回覆 (1)

more options

If the problem is limited to YouTube, perhaps one or more of your extensions override YouTube's default? If you right-click the player and check the context menu, the last line usually indicates Flash or HTML5.

In order to decode MP4 video, Firefox on Linux uses GStreamer. You could use the following page to test whether that is working in general:

http://www.quirksmode.org/html5/tests/video.html