Chrome Silencing Autoplay Videos
Autoplay video might be one of the most hated features of the web now, and Chrome’s approach is to block playback as long as the autoplay video is in a background tab. The browser will load the video as soon as the tab is opened, but it won’t start until you visit the page itself, preventing the shock of a late-loading video suddenly starting up.
What would be ideal is Chrome asking a user’s permission before playing the video, a feature many on the web have been asking for, but at least the loading and playback will be smarter and less intrusive. There will also be some performance improvements.
Delaying playback won’t help much on memory, but it will help Chrome conserve power if you close the tab without playing, and power is an important factor for mobile devices.