Google is showing videos in a grid format in the mobile Google search results between 2 and 8 videos for a single search results page. I was notified by multiple SEOs this morning of the user interface, I believe it is fairly new.
Here are some more screen shots from Twitter:
— Bhumika Kateliya (@Bhumikateliya) February 11, 2019
Yeah, they are relatively new I think. The number of videos is not limited to 4. I’ve seen up to 8 videos. pic.twitter.com/F2ZFJHv0ec
— Sergey Alakov (@sergey_alakov) February 11, 2019