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Embedded videos shows black screen

Pridané

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 no
element when not in Safe Mode.
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 no <div class="videoplayer"...> element when not in Safe Mode.

Vybrané riešenie

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.

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

Čítať túto odpoveď v kontexte 1
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Aplikácie

  • Identifikácia prehliadača: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0

Viac informácií

Autor otázky

  • 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

* 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
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cor-el
  • Top 10 Contributor
  • Moderator
17567 riešení 158887 odpovedí

Vybrané riešenie

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.

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

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
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Autor otázky

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?

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?
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cor-el
  • Top 10 Contributor
  • Moderator
17567 riešení 158887 odpovedí

You can try to create a cookie allow exception for involved third-party domains.

You can try to create a cookie allow exception for involved third-party domains.
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