This is a great feature for users who would like to watch videos without leaving their feed page, but can also be a great feature for users who use YouTube to view their videos. 

This is how it works:

You can watch videos from your subscription feed page without leaving the app. Click on the thumbnails in the video feed to view that video.

[Features]

The Quickview feature is accessible in the main menu on the top right of the YouTube app.

This feature shows your recent videos without leaving your YouTube feed page.

The YouTube app is one of the best video-sharing platforms in the world, and the Quickview feature allows you to view videos without leaving the video feed page.

This allows you to see what video you have not yet viewed and allows you to have a preview of the video.