Video
First/last frame
First/last-frame generation gives a video engine both a starting image and an ending image; the model interpolates the motion between them. It is the most precise way to control where a clip ends.
Useful for transitions (an object moves from one composition to another), reveals, and matching a clip to a following one in a storyboard.
On eroq
Supported on Seedance 2.5: the start reference plus an end frame in the composer or the API.
Questions
Which engine supports first and last frames?
Seedance 2.5 on eroq.