@l33t4opera That app is for Chrome Browser not for Opera.
Disable HTML5 Autoplay is one good app for Opera.
Latest posts made by yomauser
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RE: Turning off automatic video playbackOpera for Windows
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RE: Dark Theme for Google™Opera add-ons
Opera on Win7. It doesn't work on localized region like google.com.ar . But work fine on Google translator.com.ar