Youtube Video previews

[Bapun]

Video previews let viewers see a 3-second preview of your video before watching. They provide a better browsing experience and can engage viewers by helping them find content that they want watch.

When a viewer hovers over a video's thumbnail, they'll see a 3-second preview. After the preview plays, viewers see the video's thumbnail.

Video previews - YouTube Help

 

[PRK]

Good option for those who don't know how to disable autoplay