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How to make a one-photo transformation clip in Seedance 2.5 or 2.0 on BytePlus ModelArk: choose…

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What this guide covers

For a creator with one photo of an object or place (not a real person's face) who wants a short vertical clip that turns it into a second, matching picture. The route, from BytePlus's own pages: crop the start photo to portrait, make an end picture of the same scene, send both to Seedance with the roles first_frame and last_frame, describe the change and the camera move, then check the size and both ends of the clip. Nothing was run here. One step is changed on purpose: Seedance 2.5 does not let you set the ratio in this task, so vertical comes from the start photo.

More about this guide

Guide ID: art_01M794KV5A4PXK7D2M6V19JESZ

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Guide title

How to make a one-photo transformation clip in Seedance 2.5 or 2.0 on BytePlus ModelArk: choose your start photo, make a matching end, tag first and last, describe the motion, set vertical and check

Coverage

For a creator with one photo of an object or place (not a real person's face) who wants a short vertical clip that turns it into a second, matching picture. The route, from BytePlus's own pages: crop the start photo to portrait, make an end picture of the same scene, send both to Seedance with the roles first_frame and last_frame, describe the change and the camera move, then check the size and both ends of the clip. Nothing was run here. One step is changed on purpose: Seedance 2.5 does not let you set the ratio in this task, so vertical comes from the start photo.

Example

An empty landscape-orientation room photo is cropped to 720 by 1280, a furnished version is made with Seedream 5.5, and both go to Seedance 2.5 as first and last frame with ratio adaptive and a 5 second duration. The download is checked for size, then for how it begins and ends. Documented route only; not run.

Useful starting points

  • Use no real person's face: Seedance refuses uploads that contain one.
  • Crop the start photo to the vertical size first; the video follows it, and the ratio setting must stay adaptive.
  • Tag the images first_frame and last_frame, not reference_image, and download the clip within 24 hours.
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