I see this has been suggested / asked for over the years, with no response from Fiverr.
I made beautiful, eye-catching images to display on my gigs in search as the thumbnail, but they don’t show up.
Instead, the video thumbnail shows up. To make matters worse, the feature to choose a custom video thumbnail doesn’t work either! If it did, this would be somewhat of a solution as we could embed the image in the beginning of the video, and choose it to display as the video thumbnail. Instead, they’re all showing me with a goofy face. Unprofessional and embarassing.
This feature would be great, just like setting custom thumbnails on YouTube. Surprised Fiverr hasn’t acted on it or tried to fix the issue.