How to customize first frame as animations file thumbnail in PS?

[Dominika5C19]

For the same reasons after rendering a video of my work In PS, the first frame of animation is not the file thumbnail. I would like to set it up but can't find any information on how to do it. Any ideas?

[Peru Bob]

I've moved this from the Using the Community forum (which is the forum for issues using the forums) to the Photoshop forum so that proper help can be offered.

[Dominika5C19]

That's helpful, thank you so much.