当サイトはユーザー体験を改善するためのメンテナンスを実施中に機能が制限される予定です。記事を読んでもあなたの問題が解決せず質問をしたい場合は、Twitter の @FirefoxSupport、Reddit の /r/firefox で、サポートコミュニティが皆さんを助けようと待機しています。

Mozilla サポートの検索

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

詳しく学ぶ

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

video screens are black, cannot be played

  • 4 件の返信
  • 9 人がこの問題に困っています
  • 1 回表示
  • 最後の返信者: 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.

すべての返信 (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!!!