5 second 480p video ~ 10 credits (videos look bad, but it's useful for testing prompts)
5 second 720p video ~ 20 credits (videos look good, use it by default)
(Probably higher for 16:9 images)
This is a new model and workflow, I haven't tested it much yet. Sometimes it might give Exception, but it should work.
Prompt example:"The young woman closes her book, stands up, and walks through the library, the camera follows her dynamically as warm light streams through shelves filled with books, maintaining a cozy and inviting atmosphere."