Great question — answering as the UphillTech team:
Google made an update last spring (2023) that made it so that video thumbnails would only show up next to search results when the main content of the page is the video. In your situation, which is very common one, you include the video is as a supplementary resource to the content. As seen below, from then on results that previously were shown with video thumbnails, but weren't video results, will see those thumbnails removed. Essentially, you don't have to do anything to tell Google that the page shouldn't be indexed as a video result. Google's crawling systems will detect this automatically. You can safely ignore this annotation in Search Console (it's not an error), because based on what...
Full answer by Mike Ciffone: https://webmasters.stackexchange.com/a/144258 (CC BY-SA 4.0).
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