Embedded videos shows black screen
Some embedded videos work only in Safe Mode but show black rectangle otherwise. I have read similar questions like https://support.mozilla.org/en-US/questions/1044374. Already tried removing all extensions and themes, disabling hardware acceleration, refreshing Firefox and even reinstalling ( with apt purge firefox and removing ~/.mozilla, /etc/firefox and /usr/lib/firefox*) and disabling acceleration again. Example page: https://ru-chp.livejournal.com/13903492.html
As far as I can see there's just noChosen solution
You can check the Web Console for possible related error messages.
- "3-bar" menu button or Tools -> Web Developer
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.
- make sure your extensions and filters are updated to the latest version
- https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems
Firefox shows an highlighted shield icon at the left end of the location/address bar in case Tracking Protection 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
- "3-bar" menu button or Tools -> Web Developer
- https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
All Replies (4)
- As far as I can see there's just no div class="videoplayer" element when not in Safe Mode.
P.S. we have rather aggressive markup filter here
Chosen Solution
You can check the Web Console for possible related error messages.
- "3-bar" menu button or Tools -> Web Developer
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.
- make sure your extensions and filters are updated to the latest version
- https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems
Firefox shows an highlighted shield icon at the left end of the location/address bar in case Tracking Protection 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
- "3-bar" menu button or Tools -> Web Developer
- https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
Thank you. It's Cross-Site Tracking Cookies. Is there way to allow cross-site tracking for particular third-party cookies without turning tracking protection off?
You can try to create a cookie allow exception for involved third-party domains.