Seedance 2.5 on Increation

What it is

Seedance 2.5 is ByteDance's video model. We run it on fal's US-hosted service, at 1080p.

It makes a clip of 4 to 10 seconds in one of three ways:

• From a prompt. Describe the shot and what moves in it.
• From a picture. Your still becomes the first frame.
• From two pictures. Give it a first and a last frame, and it makes the move from one to the other.

Sound is on by default. Turn it off for a silent clip; the price is the same either way.

When to pick it

Pick Seedance 2.5 when one thing has to become another in a single take: a paper crane that turns into a heron, a skyline that turns into a shelf of books. That's a morph join, and Seedance 2.5 is the only model Creator makes them on.

Pick something else for the rest:

• Kling 3.0 also takes a first and a last frame, runs up to 15 seconds, and costs 171 credits a second against Seedance's 689 credits. For a car, a runner or a pour that doesn't change into anything, start there.
• Veo 3.1 gives you one steady shot with sound, at 720p or 1080p, for 200 credits a second. It makes 16:9 and 9:16 only, so for a square clip at 1080p, Seedance 2.5 or Kling 3.0 is the pick.

When you ask Creator for a film, it does the same sum. It puts the morph joins on Seedance 2.5 and most other shots on a cheaper model, and offers Seedance 2.5 as the alternative on the shot card if you want it there too.

What it costs

689 credits a second, at 1080p, with or without sound.

The price is on the button before anything runs. A failed clip gives its credits back.

It's the most expensive video model on Increation per second, so try the idea on Veo 3.1 Fast (75 credits a second, first and last frame too) and make the final take on Seedance 2.5.

Limits

• Lengths: 4, 5, 6, 8 or 10 seconds. Nothing longer in one clip; Kling 3.0 goes to 15.
• Resolution: 1080p only.
• Shapes: 16:9, 9:16 and 1:1.
• Pictures: one start frame, or one first and one last frame. No other reference images.
• Content: fal runs its own content check on top of ours, so a prompt we allow can still be refused. A refused clip counts as failed and its credits come back.

One worked example: a morph in one take

The shot: a folded paper crane on a pond unfolds into a real heron and takes off. Tall, for Reels.

1. Make the two frames. The first frame is the paper crane on the water. The last frame is the heron lifting off from the same pond, in the same light. Make both as images first, or use stills of your own. Keep the camera position the same in both.
2. Pick Seedance 2.5 in the model picker and choose 9:16.
3. Add both frames: the crane as the first frame, the heron as the last.
4. Say what moves, not what the place looks like; the frames already show that: "The paper crane's folds open one by one, the paper turns to feathers, and the heron spreads its wings and lifts off the water. The camera holds still."
5. Choose 6 seconds and turn sound off. The button reads 4,134 credits.

If the join shows a seam, or the bird pops in rather than growing out of the paper, give the move more time: the same shot at 8 seconds is 5,512 credits.