YouTube's dynamic player for square and vertical video now available on Android
The feature was not rolled out to Android devices at that time, but Google's YouTube announced this week that its dynamic player for square and vertical video is now available to Android users.
Basically, the application will now fill the screen with the video you're watching and remove the black bars that were appearing until now. It's a neat improvement that brings the YouTube for Android on par with the iOS version.
In the same piece of news, YouTube confirmed once again that the long-awaited dark mode will arrive on Android very soon. The new feature was launched on iOS two weeks ago, but Google said Android devices will get the dark mode as well at some point.
source: YouTube (Twitter)