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。

Learn More

YouTube wont play videos

  • 6 回覆
  • 206 有這個問題
  • 6708 次檢視
  • 最近回覆由 harshness

more options

Just within the last few days Youtube wont play videos. Any ideas why this might be they work in IE.

所有回覆 (6)

more options

Please give more details. Is this with just YouTube, or are there any problems on other sites? What does / does not happen? Does the web page load? Are there any error or other messages?

more options

YouTube sends MP4 or WebM files to visitors with Firefox 33 and above.

more options

Aren't all YouTube videos from YouTube???

The player just won't start. You can move the time pointer and it will show the appropriate stills. Reloading the page doesn't help.

There are no error messages. The HTML5 player is active.

more options

選擇的解決方法

more options

You can try to disable OMTC and leave hardware acceleration in Firefox enabled.

  • about:config page: layers.offmainthreadcomposition.enabled = false

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window
more options

Google has been using HTML5 with Firefox for a while so chasing after Flash doesn't make sense unless you also do the HTML5 avoidance maneuver.