Seedance 1.5 Pro video generation from ByteDance. Text-to-video, image-to-video, and first-and-last-frame interpolation, with a Draft mode that generates a 480p preview at 60% of the cost before you commit to the full render.

Draft mode solves the most expensive problem in AI video: iteration. Generate a preview first. Check the scene structure, camera movement, subject actions, and prompt alignment. When the Draft looks right, generate the final with the same seed. Identical composition, identical timing. Higher resolution only.

Seedance 1.5 Pro also adds native audio-video synchronization. Environmental sounds, action audio, instruments, background music, and lip-synced dialogue are all generated in the same pass as the video.

How do you use Seedance 1.5 Pro for video generation?

Choose your mode (text-to-video, image-to-video, or first-and-last-frame), write a prompt describing the subject, motion, and camera, and run Draft first. 480p preview at 60% of normal cost. When the Draft looks right, generate Final with the same seed for identical output at 1080p. Enable audio to generate synchronized sound in the same pass.

Text-to-video Generate video from a text prompt. High variability makes this mode best for creative exploration and concept testing. Draft mode is particularly valuable here: generate cheap previews until the direction is right, then commit to a single Final.

Prompting approach that works: Describe subjects and their specific actions: "a girl holding a fox, hair blown by wind, eyes slowly opening." Name the camera behavior: "the camera slowly pulls out," "a smooth 360-degree orbit," "static medium shot." Include the environment and lighting: "golden hour light through pine trees," "studio white backdrop," "foggy city street at night." For audio: name the specific sounds you want. "Piano music timed to her playing." "Crowd ambient noise." "Wind sound as her hair moves."

Image-to-video (first frame) Upload a starting image and generate coherent motion from that frame. Use this for animating existing artwork, photos, or AI-generated images while keeping the visual identity of the source.

First-and-last-frame Define both a start and an end frame. The model generates a smooth transition between them. Use this for controlled camera movements like 360-degree orbits or scene transitions where both the opening and closing composition need to be precise.

Draft mode Generates a 480p preview at 60% of the cost of a standard generation. Check scene structure, camera movement, subject actions, and prompt alignment. Draft validity lasts 7 days. When the Draft looks right, generate Final from it. The same seed is used automatically, guaranteeing identical structure at 1080p.

The math: if you need 5 attempts to find the right video, running Drafts for your iterations drops total cost from 5x to about 3.4x. The more you iterate, the more Draft saves.

Audio generation (optional) Enable to generate synchronized audio in the same pass as the video. The model analyzes the visual content and generates matching sound: piano being played gets piano music timed to finger movements, wind blowing hair gets wind sound, a character speaking generates lip-synced speech. Specify exact dialogue in your prompt and the model produces matching speech.

Last frame return Get the final frame of any generation as an image URL and use it as the first frame of the next clip. This chains multiple videos into longer sequences with visual continuity across clips.

Resolution and format Up to 1080p at 24fps as MP4. Seven aspect ratios from 21:9 ultrawide to 9:16 vertical cover every platform format. Video duration from 4 to 12 seconds per clip.

What is Seedance 1.5 Pro video generation good for?

Seedance 1.5 Pro is strongest for cinematic video generation where cost control during iteration matters. Draft mode makes it practical to test many scene directions cheaply. Native audio sync makes it the right choice for any video that needs sound in the same generation pass: music performances, dialogue, environmental audio.

Short films and trailers. Generate atmospheric scenes with camera control descriptions. Use first-and-last-frame mode for precise movements. Chain clips using last frame return to build longer sequences. Draft mode handles the iteration before committing to finals.

Music and performance videos. Generate musicians with synchronized audio: piano performances, opera singing, instruments playing. The model matches finger movements to music and lip-syncs vocals. Specify the instrument and performance style in the prompt.

Product and brand content. Animate product shots with smooth camera movements. Use Draft mode to find the right angle and motion before the final render. Seven aspect ratios cover every platform from ultrawide to vertical social.

Character animation. Bring still characters to life with natural motion: opening eyes, head turns, hair movement, expressive gestures. The model's semantic understanding handles complex movement descriptions that specify multiple simultaneous actions.

Talking head and dialogue. Generate characters speaking specific lines with lip sync. Write the exact dialogue into your prompt and the model produces matching speech and facial animation.

Pre-production and storyboarding. Draft mode is built for pre-vis work. Test scene concepts at 60% cost, iterate on camera angles and timing, generate finals only for approved shots.

Honest notes: single clips are 4-12 seconds. For longer sequences, clip chaining via last frame return is the workflow. Draft-to-Final consistency guarantees identical structure, not pixel-perfect reproduction. The Final will always be sharper but the composition and timing are locked.

How does Seedance 1.5 Pro compare to Seedance 1.0 Pro?

Seedance 1.5 Pro adds three things over 1.0 Pro: Draft mode for cost-effective iteration, native audio generation, and last frame return for clip chaining. Core video quality, resolutions, aspect ratios, and generation modes are shared between both versions. The 1.5 upgrade is primarily a workflow and economics improvement.

For teams who generate many iterations to find the right shot, Draft mode substantially reduces the cost of getting to a Final that works. For projects that need audio, 1.5 Pro eliminates a separate audio generation step. For multi-clip sequences, last frame return provides visual continuity that 1.0 Pro required manual workarounds to achieve.

FAQ

How does Seedance 1.5 Pro Draft mode work?
Draft generates a 480p preview at 60% of the cost of a standard generation. It uses the same seed, prompt, and settings as the Final. When you generate Final from a Draft, the output is structurally identical: same movements, same timing, same composition. Only the resolution changes. Draft validity is 7 days.

How much does Draft mode save on Seedance 1.5 Pro?
Draft costs 60% of a standard generation. If you typically need 5 attempts to find the right video, using Draft for iterations drops total cost from 5x to about 3.4x. The more attempts a project requires, the more Draft saves relative to generating Finals each time.

Can Seedance 1.5 Pro generate audio with the video?
Yes. Audio generation is optional and runs in the same pass as the video. The model generates synchronized sound matched to the visual content: environmental audio, action sounds, instruments, background music, and lip-synced speech. Specify sounds and dialogue in your prompt.

How do I make longer videos with Seedance 1.5 Pro?
Single clips are 4-12 seconds. Use last frame return to chain clips: the final frame of any generation is returned as an image URL that you use as the first frame of the next clip. Each clip maintains visual continuity with the previous one.

What is the first-and-last-frame mode in Seedance 1.5 Pro?
You provide both a start image and an end image. The model generates smooth motion between them. Use this for controlled camera movements where both the opening and closing composition need to be precisely defined, like a 360-degree orbit or a scene transition between two specific visual states.

How do I run Seedance 1.5 Pro online?
You can run Seedance 1.5 Pro online through Floyo. No installation, no setup. Open the workflow in your browser, enter your prompt, and hit run. Free to try.