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No video (only sound) on welt.de

  • 1 回覆
  • 1 有這個問題
  • 18 次檢視
  • 最近回覆由 cor-el

info5856
info5856
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Since some weeks (possibly after the latest firefox update) Firefox doesn't show videos on the website 'welt.de'. I hear the sound, but don't see the video. Other sites work fine (facebook, youtube, etc.) only on welt.de appears this problem. I tried to fix it but no success. What may be the problem?

Since some weeks (possibly after the latest firefox update) Firefox doesn't show videos on the website 'welt.de'. I hear the sound, but don't see the video. Other sites work fine (facebook, youtube, etc.) only on welt.de appears this problem. I tried to fix it but no success. What may be the problem?

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cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.

Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check the Web Console for related messages about blocked content.

You can try these steps in case of issues with webpages:

You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings).

"Remove the Cookies" for websites that cause problems:

  • Settings -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Settings -> Privacy & Security
    Cookies and Site Data -> Clear Data -> Cached Web Content: Clear

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window

See also: