Seedance 2.5 is live: 30-second clips you can edit and extend

Seedance 2.5 is now available on the canvas.

Up to 30 seconds per clip

The Seedance 2.0 family caps at 15 seconds; 2.5 doubles that to 30 seconds. It supports 480p and 720p, with up to 30 reference images.

Video editing: change what you don't like, in place

Video nodes now have an Edit video button in the toolbar. It opens a player — step to the exact frame you want to change, draw on it to point at the spot, then describe the change.

Every frame you capture drops a timestamp tag into the prompt automatically — no counting seconds by hand:

00:02 change the outfit to blue
00:03 switch the background to a night bar scene
00:09 make the hair dark blue with highlights

Video extension: add to either end

Two new entries on the panel:

• Extend backwards — generates what happened before the clip begins
• Extend forwards — continues the story after it ends

You pick the output length, 4 to 30 seconds. The output ratio follows the source video.

How reference videos are priced

Correction (2026-08-10): this section previously said reference videos were often cheaper and showed a "32% off" table. That was our miscalculation. They are not cheaper — the correct explanation is below.

Seedance 2.5 charges a lower rate when your request includes video input. But video-input requests also carry a minimum billing amount, and the two cancel each other out almost exactly.

The result: attaching a reference video costs about the same as text-only generation, and only becomes more expensive once the reference runs longer than two-thirds of your output.

For a 30-second 720p output:

So attach a reference when your work needs one — there is no need to keep clips short just to save credits. The credit figure on the panel is live, so you can see the exact price before you generate.