为提升您的使用体验,本站正在维护,部分功能暂时无法使用。如果本站文章无法解决您的问题,您想要向社区提问的话,请到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 提问,我们的支持社区将会很快回复您的疑问。

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信,及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

Video playback not working correctly.

more options

Video playback is not working correctly on Windows 8.1 Pro and Firefox version 43.0.4. I've attached an error message I keep getting on YouTube. I get problems off and on playing video on Dallas Cowboys. com. MSN videos load very slowly and sometimes don't play at all. I've run them in safe mode so I don't think it is the extensions that I use. I have removed Ghostery and Adblock Plus. When I use Google Chrome all these sites load quickly, play with no errors even with Ghostery and Adblock Plus extensions running. What am I missing and how do I fix it?

Video playback is not working correctly on Windows 8.1 Pro and Firefox version 43.0.4. I've attached an error message I keep getting on YouTube. I get problems off and on playing video on Dallas Cowboys. com. MSN videos load very slowly and sometimes don't play at all. I've run them in safe mode so I don't think it is the extensions that I use. I have removed Ghostery and Adblock Plus. When I use Google Chrome all these sites load quickly, play with no errors even with Ghostery and Adblock Plus extensions running. What am I missing and how do I fix it?
已附加屏幕截图

被采纳的解决方案

I've called the big guys to help you. Good luck.

定位到答案原位置 👍 1

所有回复 (4)

more options

1) Enter the config by typing about:config in the address bar. 2) Enter media.mediasource.webm.enabled and press enter. 3) Right click on it and change to true, for some reason it is set as "false" which makes MSE & WebM VP9 not work properly. 4) Visit: https://www.youtube.com/html5 and check that everything is OK. 5) Try to watch a video. It should work now.

more options

Thank you for your response. I have work through your steps twice and media.mediasource.webm.enable changed to true but the YouTube error still exists.

more options

选择的解决方案

I've called the big guys to help you. Good luck.

more options

Upon closer examination this morning I have found that MSE & WebM VP9 has a red exclamation point on https://www.youtube.com/html5. In your step 4 you asked to check https://www.youtube.com/html5 and make sure everything is OK. Seems like that is not OK.