A recent post on ReelSEO offers some tips on what makes
a good video thumbnail.
But that's at least a good starting point to get an idea about how
well your video thumbnails are performing to convert viewers.
Not exact matches
This allows you to split test which version of a
video thumbnail drives the most engagement and performs
best.
YouTube gives you a choice of three
thumbnails to represent your
video, but you can also add a custom
thumbnail to
better display what your
video is about.
You can't just be doing a gaming
video and randomly put a
well known celebrity in the
thumbnail, then at the end of your
video have two seconds where you go «And now a review of Kanye West.
You'll be able to view a
thumbnail of the
video file, as
well as options to play, save, trim, and delete it, right from the notification panel.
But it would still be
better if the browsing interface that shows
video thumbnails was tablet - optimized, which is why VLC Beta gets the nod here.