What is Seedance V1.5 Pro Extend?

Seedance V1.5 Pro Extend is a video extension model from ByteDance. It turns a video you already have into video: 10 second clips at 1080p with native audio. On Enhance AI it runs on the same account as 250+ other models, with no separate subscription.

What do I need to upload to use Seedance V1.5 Pro Extend?

A video and a written prompt. Add them in the studio on Enhance AI, check the preview and render. The output lands in your history, ready to download or to pass to another model on the same account.

When was Seedance V1.5 Pro Extend released?

ByteDance released Seedance V1.5 Pro Extend on 16 December 2025. You can run it on Enhance AI now, along with every other video model on one account.

How long can a Seedance V1.5 Pro Extend clip be?

Seedance V1.5 Pro Extend produces clips from 5 to 10 seconds. Longer runs cost more, because video is billed by length rather than by generation.

What resolution does Seedance V1.5 Pro Extend output?

Seedance V1.5 Pro Extend renders at 720p.

Does Seedance V1.5 Pro Extend generate audio?

Yes. Seedance V1.5 Pro Extend can generate sound with the picture, so the clip arrives with audio rather than silence. Mute it and lay your own track over the top if you prefer.

Is Seedance V1.5 Pro Extend free to try?

Yes. Free credits on signup, no card required, so you can run Seedance V1.5 Pro Extend before paying anything. Plans from $19 one time when you need more, and one account covers Seedance V1.5 Pro Extend and 250+ other models.

What does it cost to run Seedance V1.5 Pro Extend?

Video renders are billed from your wallet by clip length and resolution, so a short clip at a lower resolution costs less than a long one at full quality. You see the price before you render.

Do I need a separate subscription for Seedance V1.5 Pro Extend?

No. Seedance V1.5 Pro Extend runs on the same Enhance AI account as every other model, so you are not paying one provider for video and another for images.

ByteDance

Seedance V1.5 Pro Extend: AI video extension

Extend videos using ByteDance Seedance V1.5 Pro.

Free credits on signup, no card required. Plans from $19 one time.

Try Seedance V1.5 Pro Extend Browse all models

Key features

Seedance V1.5 Pro Extend turns a video you already have into video inside Enhance AI. It produces clips from 5 to 10 seconds at 720p. Seedance V1.5 Pro Extend is built by ByteDance. On Enhance AI it runs on the same account as every other model, with no separate subscription.

Clip length

Seedance V1.5 Pro Extend renders clips from 5 to 10 seconds, and you pick the length before you render. Longer clips cost more because video is billed by length, so rough out an idea short and only render the full length once the shot works.

Resolution

Choose 480p, 720p or 1080p before you render. A lower resolution costs less, so test a prompt low and rerender the keeper at the top setting. The studio shows the price for the setting you picked before anything is charged.

Input modes

Upload a video you already have and Seedance V1.5 Pro Extend continues it from the last frame, so the new segment matches the light, the framing and the motion of the original. Describe what should happen next and the model carries the shot forward without a visible join.

Audio

Seedance V1.5 Pro Extend can generate sound with the picture, so the clip arrives with audio that matches what is on screen rather than silence you have to fill later. You can still mute it and lay your own voice or music track over the top in any editor.

Specifications

Provider: ByteDance
Type: Video
Released: 16 December 2025
Resolution: 720p
Duration: 5, 10 seconds

How to use Seedance V1.5 Pro Extend on Enhance AI

1
Sign in and pick Seedance V1.5 Pro Extend
Open the Video Studio on Enhance AI and choose Seedance V1.5 Pro Extend from the model list. A new account starts with free credits and no card is needed. The Try button on this page opens the studio with Seedance V1.5 Pro Extend already selected.
2
Upload the clip and say what happens next
Upload the video you want to continue and describe the next beat in plain words, using the same terms as the original prompt so the extension stays consistent. Then pick a length from 5 to 10 seconds and a resolution.
3
Generate, then download
Press Generate. Seedance V1.5 Pro Extend renders in the cloud and the clip lands in your history on Enhance AI, where you can download the MP4. You see the price before you confirm.

What people make with Seedance V1.5 Pro Extend

Filling a cut

Editors use Seedance V1.5 Pro Extend to make a clip long enough for a cut that needs a beat more time: a hold on a face, a slower pull back, a moment before the transition. A short extension is often the difference between a cut that feels rushed and one that breathes.

Longer stories from short clips

Seedance V1.5 Pro Extend takes a clip that stops too early and carries it on, so a five second shot becomes the length the story needs. Describe what happens next in the same terms you used for the original prompt, and the extension keeps the light, the framing and the motion consistent.

Fixing an ending

When a generated clip is right for most of its length and falls apart at the end, trim it before the problem and extend from there. Seedance V1.5 Pro Extend continues from the last good frame, which is far cheaper than rerolling the whole shot and hoping for a better result the second time.

Common questions

What is Seedance V1.5 Pro Extend?: Seedance V1.5 Pro Extend is a video extension model from ByteDance. It turns a video you already have into video: 10 second clips at 1080p with native audio. On Enhance AI it runs on the same account as 250+ other models, with no separate subscription.
What do I need to upload to use Seedance V1.5 Pro Extend?: A video and a written prompt. Add them in the studio on Enhance AI, check the preview and render. The output lands in your history, ready to download or to pass to another model on the same account.
When was Seedance V1.5 Pro Extend released?: ByteDance released Seedance V1.5 Pro Extend on 16 December 2025. You can run it on Enhance AI now, along with every other video model on one account.
How long can a Seedance V1.5 Pro Extend clip be?: Seedance V1.5 Pro Extend produces clips from 5 to 10 seconds. Longer runs cost more, because video is billed by length rather than by generation.
What resolution does Seedance V1.5 Pro Extend output?: Seedance V1.5 Pro Extend renders at 720p.
Does Seedance V1.5 Pro Extend generate audio?: Yes. Seedance V1.5 Pro Extend can generate sound with the picture, so the clip arrives with audio rather than silence. Mute it and lay your own track over the top if you prefer.
Is Seedance V1.5 Pro Extend free to try?: Yes. Free credits on signup, no card required, so you can run Seedance V1.5 Pro Extend before paying anything. Plans from $19 one time when you need more, and one account covers Seedance V1.5 Pro Extend and 250+ other models.
What does it cost to run Seedance V1.5 Pro Extend?: Video renders are billed from your wallet by clip length and resolution, so a short clip at a lower resolution costs less than a long one at full quality. You see the price before you render.
Do I need a separate subscription for Seedance V1.5 Pro Extend?: No. Seedance V1.5 Pro Extend runs on the same Enhance AI account as every other model, so you are not paying one provider for video and another for images.