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

Video will not play from any web site. This recently started.

  • 13 回覆
  • 5 有這個問題
  • 3 次檢視
  • 最近回覆由 Garak

more options

Seems web sites will no longer play video. It looks like they are downloading, but they won't play. I've updated the Flashplayer, tried disabling plugins, everything I could think of. Nothing seems to work. Can't say exactly when this began. But just can't seem to get any video to play. Thanks!!!

Seems web sites will no longer play video. It looks like they are downloading, but they won't play. I've updated the Flashplayer, tried disabling plugins, everything I could think of. Nothing seems to work. Can't say exactly when this began. But just can't seem to get any video to play. Thanks!!!

被選擇的解決方法

It could be the work of one of your add-ons, or it could be Hardware Acceleration. How to disable Hardware Acceleration {web link}

Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)

In the Add-ons Manager, on the left, select Extensions. Disable a few add-ons, then Restart Firefox.

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All Of them.

If the problem continues, disable some more (restarting FF). Continue until the problem is gone. After, you know what group is causing the issue. Re-enable the last group ONE AT A TIME (restarting FF) until the problem returns.

Once you think you found the problem, disable that and re-enable all the others, then restart again. Let us know who the suspect is, detective.

從原來的回覆中察看解決方案 👍 1

所有回覆 (13)

more options

It does help if there is a site in reference as this general statement doesn't provide how or why for anyone trying to find out what is the cause.

more options

No site will play. Youtube. Fox news. The Blaze. None. The video appears to load. I can even see the thumbnails along the playback line. But the video will not play.

more options

Netflix is not playing on my computer.

more options

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

more options

Ok, the videos run in safe mode but not if I just run Firefox normally. What do I do to stop blocking content?

more options

Ok, the videos run in safe mode but not if I just run Firefox normally. What do I do to stop blocking content?

more options

選擇的解決方法

It could be the work of one of your add-ons, or it could be Hardware Acceleration. How to disable Hardware Acceleration {web link}

Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; <Control> (Mac=<Command>) <Shift> A)

In the Add-ons Manager, on the left, select Extensions. Disable a few add-ons, then Restart Firefox.

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All Of them.

If the problem continues, disable some more (restarting FF). Continue until the problem is gone. After, you know what group is causing the issue. Re-enable the last group ONE AT A TIME (restarting FF) until the problem returns.

Once you think you found the problem, disable that and re-enable all the others, then restart again. Let us know who the suspect is, detective.

more options

Disabling addons made no difference but when I turned off hardware acceleration all of the videos came back to life. Thank you so much for your help.

more options

Glad to help. Safe Surfing.

more options

Videos do not load or play on any web site. I get just a black area where the video should be. I tried restarting in safe mode and that does not solve the problem.

more options

None of my browsers--Firefox, Chrome, and Safari--will play videos, with a few exceptions. This problem started suddenly, about 30 minutes ago. The video at http://www.labastidedemarie.com/#!villa-luberon/sejour-luberon-menerbes played then, but not now. Nor do videos at the New York Times, YouTube, Daily Motion, or other websites. However, weather radar will play at http://www.intellicast.com/National/Radar/Current.aspx?location=USFL0438&animate=true and http://www.baynews9.com/fl/tampa/weather/radar. The video at https://www.apple.com/iphone-x/ seems to play.

Videos I have already downloaded play in the VLC player.

I have not changed any settings.

I have run a Malwarebytes scan, which came up clean. I updated Flash. I cleared the caches for each browser. I unchecked "Use hardware acceleration when available" for Firefox. I emptied the system and browser caches. I ran Disk Repair. I shut down and restarted. Nothing works.

iMac 27-inch Mac OS 10.13.6 Firefox "About Firefox" stopped working just now. It is not Quantum. I see the usual window briefly, for less than 1 second, then nothing but a white screen. Safari 11.1.2 Malwarebytes free version

more options

Garak and spyhop

If the above did not help, try this.

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there? +++++++++++++++++++++++++++++++++++++++++++ One issue that seems more common lately is Firefox's Tracking Protection feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Tracking Protection {web link}


But if there is still a problem, Please go to the top of any support.mozilla.org web page and use the Ask A Question link; https://support.mozilla.org/en-US/questions/new Select the product for what the problem is (Firefox or whatever).

Now select the category for the problem. At the bottom is Other.

Describe the problem in brief (one line). Then press <enter>. The website will display any prior posts that might help you. If nothing on the list can help, at the bottom press the button; None Of These Solve My Problem.

Now enter all the relative information on the problem. At the bottom of this, you can Add Images.

Under this is Troubleshooting Information. Please press the Share Data button. This will let us look at your system details. No Personal Information Is Collected.

more options

Thanks. I rebooted my iMac, and things now seem to working properly. I am still puzzled as to what could have caused such a system-wide failure.