The Bandwidth Consumption Vector
Few web design trends are as universally despised as the autoplaying video. Whether it is a small news segment anchored to the corner of a screen or a massive, full-page advertisement that suddenly begins screaming through your speakers, these videos are highly disruptive. Furthermore, if you are operating on a metered cellular connection (tethering from your phone), these videos silently consume gigabytes of expensive data bandwidth in the background. You must instruct the browser to strip this capability from websites.
How to Block Autoplaying Videos
Google Chrome currently lacks a simple, master toggle switch in its standard settings menu to universally kill all autoplaying media. You must modify the browser’s behaviour by altering site-specific permissions or deploying an extension.
1. The Mute Workaround (Native): Chrome allows you to globally mute websites, which effectively neutralizes the audio component of the video, though it will still visually play.
* Go to Settings > Privacy and security > Site settings.
* Scroll down and click Additional content settings > Sound.
* Select Don’t allow sites to play sound.
2. The True Block (Extension): To actually stop the video file from downloading and buffering, you must install a lightweight, open-source extension.
* Navigate to the Chrome Web Store.
* Search for AutoplayStopper (or a similar, highly-rated media blocker).
* Click Add to Chrome.
* Once installed, the extension operates entirely in the background, injecting a script that intercepts and destroys the HTML5 video trigger before it reaches your screen.