Google is testing a feature of auto play videos in search results panel, but may be possible that not available for everyone
A Google spokesperson confirmed this limited test, telling us “we are constantly experimenting with ways to improve the search experience for our users, but have no plans to announce at this time.”
“when you do a search for some movies (and possibly television shows), Google will begin auto playing a video in the right hand sidebar, appearing within the knowledge panel.”
Google tries to keep searching user friendly as much as possible, so this is quite surprising. But auto play is not much irritating for users, so it can be implemented. It can be a problem when user will not search with accurate keywords, and the played video is not the searched one.