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Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

video not showing up on some sites

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When I go to some sites (for example the "box" for video shows up, but no controls to run the video, not even the default image just a blank box.

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Hi Kosh,

You could try disabling hardware acceleration.

To do this: Click the '3-bar' menu icon in your Firefox browser -> Options -> In the General panel scroll down to Performance -> uncheck Use hardware acceleration when available -> restart Firefox

If that doesn't work you could try starting Firefox in Safe Mode.

Starting in Safe Mode may resolve the issue by disabling add-ons that may be interfering.

To do this: Click the '3-bar' menu icon in your Firefox browser -> Help(?) -> Restart with Add-ons Disabled... -> Restart -> when prompted choose Start in Safe Mode{link} NOT Refresh Firefox{link}.

You may want to check if your graphics card is up-to-date: Upgrade your graphics drivers to use hardware acceleration and WebGL

Related thread: Can't watch ANY videos in Firefox {link}

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I can see the video if I disable Content Blocking by clicking the shield icon at the left end of the location bar.

Firefox shows the shield icon at the left end of the location/address bar in case Content Blocking is blocking content.

  • click the shield icon for more details and possibly disable the protection

You can check the Web Console about what content is blocked

If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.