Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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。

Learn More

video screens are black, cannot be played

  • 4 个回答
  • 9 人有此问题
  • 7 次查看
  • 最后回复者为 JudyLC

more options

Videos, and live stream sites that I always use, are suddenly showing black screens only--no audio, no playing. My plugins are up-to-date. The same videos and live stream work on Safari. What changed since yesterday? Thanks.

Videos, and live stream sites that I always use, are suddenly showing black screens only--no audio, no playing. My plugins are up-to-date. The same videos and live stream work on Safari. What changed since yesterday? Thanks.

所有回复 (4)

more options

You can try to disable hardware acceleration in Firefox.

  • Firefox > Preferences > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.


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

Thank you for taking the time and effort to help me!

What finally helped in the list of suggestions, was restarting the computer. Putting it in "safe mode" and detoggling the "hardware acceleration" button didn't work.

I had tried restarting Firefox, but that apparently wasn't enough to solve it.

Again, many thanks!!!

more options

Thank you for taking the time and effort to help me!

What finally helped in the list of suggestions, was restarting the computer. Putting it in "safe mode" and detoggling the "hardware acceleration" button didn't work.

I had tried restarting Firefox, but that apparently wasn't enough to solve it.

Again, many thanks!!!

more options

Thank you for taking the time and effort to help me!

What finally helped in the list of suggestions, was restarting the computer. Putting it in "safe mode" and detoggling the "hardware acceleration" button didn't work.

I had tried restarting Firefox, but that apparently wasn't enough to solve it.

Again, many thanks!!!