Currently, the Stream webpart in SharePoint (in preview) displays a lot of information over the thumbnail of the video:
The play button
Title
Number of plays
Number of likes
Option to add to watchlist
Option to like
Suggestion: to create for a cleaner look and to allow for more visual interest in the content, instead of having the information display by default, only have the play button show (to clearly indicate it's a video). Then, display the extra information upon a mouse-over/hover. If hovering is a concern in mobile, then display the information at the top and bottom of the video window, but not right over the thumbnail image.
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