The next internet video summary you see might not have been written by a human. YouTube is testing AI-generated video summaries that appear on search and watch pages. The text is meant to provide a "quick overview" of a clip to help you decide if it's worth watching. The company is quick to stress that these don't replace creators' own video descriptions.

The test will only be visible with a "limited number" of English-language videos, and only for some viewers. In a statement to Engadget, a YouTube spokesperson says the summaries will appear on mobile devices for how-to videos, shopping videos and vlogs. You'll see the videos worldwide. 

YouTube has given users a few preview features in recent weeks, as Android Policeexplains. Premium subscribers could lock the screen during playback to prevent accidental commands. You've also had the option to turn Shorts comments into entirely new short-form clips.