Sites you watch videos on often won’t be affected.
Google is taking aim at one of the biggest scourges of the modern web. Starting in January 2018, the Chrome browser will automatically block noisy autoplay video on webpages.
In Chrome 64, autoplaying videos will be blocked by default unless they’re muted, or if “the user has indicated an interest in the media.” That means autoplay will be allowed for a site if you’ve frequently played a video on it or added the site to your mobile homepage. You won’t need to manually play every YouTube video or Twitch stream you select, in other words. Autoplay will also be enabled if you “clicked somewhere on the site during the browsing session” for some reason.
Apple’s Safari 11 browser will also allow you to easily stop autoplay videos when it launches with macOS High Sierra on September 25.
We are on version 61 just now so not long to wait.