No, I'm sorry the feature you have requested is not available at this time.
Thank you for the quick reply, Mat.
The lack of ability to set a thumbnail frame makes doing any kind of sunrise time-lapse video pretty much a futile effort here, since all anyone can see is one of the first frames of the video; a black frame, or something close to it.
I would love to submit this as a feature request. Adobe is the only video stock agency I have heard of that does not support this feature.
Thanks again for your time.
It seems to use random frames, not even the first so that the contributor could have some control over what potential customers see. I would also really like to see this capability added.
I am doing time lapses and the poster frame / thumbnail selected by Adobe Stock does not represent the asset I want to sell. This feature is available on other stock image platforms (Shutterstock, Pond5, etc.) and impacting the ability to sell my content on Adobe Stock.