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Seedance 2.5 First & Last Frame

Set the destination. Give the transition enough time to arrive.

Describe what you want to create.
Runs on

Seedance 2.54–30 s · 1080p

Aspect ratio
Duration
Resolution
Sound
Try a prompt:
Start picture for a new shot
Start frame
Later selected frame for a new shot
End frame
The Straight Line
The Straight Line

Create a new five-second shot connecting the two supplied pictures. Start from the first picture and arrive at the second selected picture, preserving the adult headset wearer, clothing, stairwell and camera direction. Use a small continuous door-opening movement. Use these two selected pictures as the new shot's starting and ending frames.

15 s

He knew this door led downstairs. He opened it and died below. Footage shows him leave a safety marker, then curve towards the stairwell without visibly turning. Tracking was normal. The new build promised to steer him to safety. Why did it steer him here?

How it works

Try it now
  1. Start picture for a new shot
    01

    Add your start frame

    Drop it in, or pick one of yours.

  2. 02

    Say how it should move

    A sentence or two is enough.

  3. The Straight Line
    03

    Make it

    Start creating, then keep working with HowWorks.

Explore the possibilities

The Straight Line
He knew this door led downstairs. He opened it and died below. Footage shows him leave a safety marker, then curve towards the stairwell without visibly turning. Tracking was normal. The new build promised to steer him to safety. Why did it steer him here?

Seedance 2.5 at a glance

Good at
One continuous take up to 30s, up to 30 reference images to lock characters. Slowest.
Modes
Text to Video, Image to Video, First & Last Frame, Reference to Video
Length
4–30 s (presets 5, 10, 15, 30 s)
Resolution
480p, 720p, 1080p
Aspect ratios
16:9, 9:16, 1:1, 4:3, 3:4, 21:9
Image-led framing
May follow the input image; check the output frame
Sound
On by default, can be switched off
Reference images
Up to 30

About

A pair of prepared frames can give a reveal, transformation or shift of light a clear destination. Seedance 2.5 First & Last Frame takes both images and a brief for the movement between them. Its 4–30-second range gives you room for a gradual transition. Prepare both images for the frame you want and check the output crop. Keep the two crops and subject details compatible, explain the camera path, and choose whether sound belongs in the shot. Review the transition itself as well as its endpoints before using it in a sequence.

Questions

What does the end-frame image do?

It supplies the intended final composition. Describe the route from the start to that ending. A reference image guides a scene differently and does not replace the required end frame.

How should I prepare the two images?

Use compatible aspect ratios and keep important subject details consistent. Explain any intended change of position, scale, lighting or setting so the transition has a clear direction.

How much time can I give the transition?

Seedance 2.5 supports 4–30 seconds. Choose enough time for the movement without adding unrelated actions merely to fill the duration.

Can I request a silent transition?

Yes. The model has an audio on/off setting. With audio enabled, describe relevant ambience or action sound, then review both sound and motion in the actual result.

Do two endpoint images guarantee the path between them?

The endpoints alone do not determine an exact intermediate path. Describe the movement and inspect the middle frames for subject continuity, geometry and unwanted cuts.