Of the thousands to millions of frames that a video might have, how is a particular representative frame chosen to be the thumbnail?


1 Answer 1


There are many ways to skin this cat. I'll explain one way that I know is used in industry.

  1. Create candidate frames algorithmically using the image features; e.g., the histogram, sharpness, presence of humans, faces, and anything else you can think of.
  2. Serve different candidates to different users and see which ones are popular
  3. You can stop once the popularity contest results stabilize. However, for bonus points you can learn the ranking function that yielded the list based on the features enumerated in part one.
  4. Use the ranking function to select the best frame, or cull the list of candidates for subsequent tests.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.