When you are on YouTube website (and not on an external YouTube video player). And you click on the play button of this video player and activate the turn off the lights extension (to dims the web page). The video starts playing, but about 5 seconds later, the audio doubled and you hearing the same audio track 2 times at once. One on time with the video content and the other one with a 5-second delay. That is possible if you have enabled the “blur” feature in the Turn Off the Lights options page.

double sound on YouTube video
YouTube video from Selena Gomez – Lose You To Love

Follow the below steps to fix this issue in your web browser:

  1. Open your browser extension page, example for:
    Google Chrome: chrome://extensions/
    Microsoft Edge: edge://extensions/
    Opera: opera://extensions/
    Firefox: about:addons
    Safari: Go to the Safari, Preference, Extensions tab
    Yandex Browser: yandex://extensions/
  2. Click on the Options link, and it opens a new page
  3. And uncheck the “blur” feature
  4. Restart your web browser

What is that “blur”?

The blur feature is one of the basic settings in the Turn Off the Lights extension to make the website a bit vague. And keep the video sharp on top of the web page. It is like a dark layer on top with a gaussian blur effect inside it.

But why I am hearing double?

Turn Off the Lights dynamic recreate the code from the original website and blur this with the CSS hardware filter. And YouTube plays always the video automatically when you open his video website.

Do you found technical, factual and grammatical errors on the Turn Off the Lights website?
You can report a technical problem using the Turn Off the Lights online technical error feedback form.

About The Author

Avatar for Stefan Van Damme