Vertical video is a different format, not a crop. The subject has to read in the middle of the frame, the first second has to earn attention, and the motion has to survive compression. A landscape clip with the sides cut off usually feels like an afterthought.
This workflow uses Seedance 2.0 to create a 9:16 clip from a prompt or a source image. You can keep the motion simple, choose a short duration, and build a clip that is designed for a phone screen from the start.
It is useful for product teasers, creator hooks, event promos, restaurant specials, and any brand that needs a short vertical asset without a full production crew.