Twitter is testing a new feature that will let users watch YouTube videos in-line, without leaving the Twitter conversation.
Traditionally, clicking on a YouTube link in Twitter took a user to the YouTube video, leaving the Twitter thread behind. With Twitter’s new feature, users will be able to watch the video without leaving the thread.
https://twitter.com/TwitterSupport/status/1372592575849189381?s=20
The feature obviously has value to Twitter, as it keeps users from leaving, but it’s also a nice feature for Twitter users as well.