Video mode now only show pages where video is the main content

Earlier this year, we made a change to only show video thumbnails next to results on the main
Google Search results page when the video is the main content of a page. Today, we’re
extending this change to search results in Video mode to
better connect users with the video content they’re looking for (rather than having to comb
through a page to find that video). This change will start rolling out today, and it could take
up to a week to complete.