What is Seedance 1.5 Pro?

Seedance 1.5 Pro is ByteDance's latest video generation model - and the first to let you preview results before committing to full render. Draft mode generates a 480p preview at 60% of normal cost, so you can validate scene structure, camera movement, and prompt alignment before spending on the final 1080p output.

How does Draft mode work?

Draft mode solves the most expensive problem in AI video: iteration. Instead of burning through full-price renders hoping one lands, you generate a 480p preview first. Check the scene structure, camera movement, subject actions, and prompt alignment. When the Draft looks right, generate the final version with the same seed - guaranteed consistency.

What's new in Seedance 1.5 Pro?

Draft mode is the headline feature, but 1.5 Pro also adds native audio-video synchronization. Previous Seedance versions produced silent video - now you get environmental sounds, action audio, music, and even human voices generated in sync with the visuals, all in one pass.

Draft Sample Mode

Preview at 480p for 60% of normal cost. Validate before committing. Generate final from Draft with identical seed for guaranteed consistency. Draft validity lasts 7 days.

Native Audio-Video Sync

Generate synchronized audio with your video - environmental sounds, action sounds, instruments, background music, and human voices including singing with lip sync. No separate audio generation step.

Last Frame Return

Get the final frame of any generation as an image URL. Use it as the first frame of your next clip to chain multiple videos into longer sequences with visual continuity.

What can you create with Seedance 1.5 Pro?

Seedance 1.5 Pro handles cinematic video generation with optional synchronized audio. The model works across photorealistic and stylized content, with strong semantic understanding for complex prompts describing subject movement, camera motion, and scene dynamics.

Short Films & Trailers

Create atmospheric scenes with camera control. Use first-and-last frame mode for precise movements like 360-degree orbits. Chain clips using last frame return.

Music & Performance Videos

Generate musicians with synchronized audio - piano performances, opera singing, instruments playing. The model matches finger movements to music and lip syncs vocals.

Product & Brand Content

Animate product shots with smooth camera movements. Use Draft mode to nail the angle before final render. Seven aspect ratios cover every platform.

Character Animation

Bring still characters to life with natural motion - opening eyes, head turns, hair in wind. Strong semantic understanding handles complex movement descriptions.

Talking Head & Dialogue

Generate characters speaking specific lines with lip sync. Specify exact dialogue in your prompt and the model produces matching speech.

Pre-production & Storyboarding

Draft mode is perfect for pre-vis work. Quickly test scene concepts at low cost, iterate on camera angles and timing, then generate finals only for approved shots.

How does Seedance 1.5 Pro compare to 1.0 Pro?

Both models share core video generation capabilities - same resolutions, same aspect ratios, same quality. The 1.5 Pro upgrade adds Draft mode for cost-effective iteration, native audio generation, and returns the last frame for easier clip chaining.

What are Seedance 1.5 Pro's capabilities?

Three core generation modes - text-to-video, first-frame image-to-video, and first-and-last-frame interpolation. All modes support Draft preview and optional audio generation. The model handles seven aspect ratios and resolutions up to 1080p at 24fps.

Text-to-Video

Generate video from text prompts. High variability makes this ideal for creative exploration. Use Draft mode to iterate cheaply until you find the right direction.

Image-to-Video (First Frame)

Provide a starting image and generate coherent motion from that frame. Great for animating existing artwork, photos, or AI-generated images.

First-and-Last Frame

Define start and end keyframes, get smooth transitions between them. Perfect for controlled camera movements like 360-degree orbits.

Draft Preview

Generate 480p preview at 60% cost. Validate scene structure, camera movement, and prompt alignment. Generate final from approved Draft with same seed.

Audio Generation

Optional synchronized audio - environmental sounds, action audio, instruments, background music, human voices with lip sync. Enable with a single parameter.

Clip Chaining

Return last frame of any generation to use as first frame of next clip. Build longer sequences with visual continuity across multiple generations.

What are Seedance 1.5 Pro's technical specifications?

MP4 output at 24fps with resolutions up to 1080p. Seven aspect ratios from 21:9 ultrawide to 9:16 vertical. Video duration from 4-12 seconds with frame-level control using formula 25 + 4n. Draft previews render at 480p with 7-day validity.

How does Seedance 1.5 Pro work?

Seedance 1.5 Pro uses strong semantic understanding to interpret complex prompts describing subjects, movements, and camera behavior. When you describe a scene like "a girl holding a fox, the camera slowly pulls out, hair blown by wind" - the model understands not just what to show, but how everything should move and interact over time.

Draft mode works by generating the same video at lower resolution using the same seed. Because the seed controls the randomness, your Draft and Final will be structurally identical - same movements, same timing, same composition. The only difference is resolution. This lets you validate cheaply before committing.

Audio generation analyzes the visual content and synthesizes matching sound. Piano being played gets piano music timed to finger movements. Wind blowing hair gets wind sounds. For dialogue, you specify exact words in your prompt and the model generates speech with lip sync.

Frequently Asked Questions

How much does Draft mode actually save?

Draft costs 60% of a standard generation. If you typically need 5 attempts to get the right video, using Draft for iterations drops total cost from 5x to about 3.4x. The more you iterate, the more you save. Draft validity lasts 7 days.

Will my Final look exactly like my Draft?

Yes - when you generate Final from a Draft, it automatically uses the same seed, prompt, and settings. The only difference is resolution. Scene structure, camera movement, subject actions, and timing will be identical.

Is Seedance 1.5 Pro free to use?

You can try Seedance 1.5 Pro free on Floyo. We give you free generation time to test workflows. After that, you only pay for what you generate - no subscription required for access.

How do I use Seedance 1.5 Pro without installing anything?

Floyo runs Seedance 1.5 Pro directly in your browser. Pick a workflow, enter your prompt, upload reference images if needed, and hit run. No Python, no API keys, no GPU setup.

Who made Seedance 1.5 Pro?

Seedance 1.5 Pro is developed by ByteDance and distributed through BytePlus ModelArk. ByteDance is the company behind TikTok with significant video AI expertise.

What's the maximum video length?

Single generations are 4-12 seconds at 24fps. For longer content, use last-frame return to chain clips together - each clip's final frame becomes the starting point for the next.