Seedance 2.0 Fast

Professional-grade video creation model with native audio, similar to SeeDance 2.0 but faster and cheaper.

~86.73s

~$5

Playground

API Pricing

~86.73s

~$5

Terms of Use

Seedance 2.0 by ByteDance

By accessing this model through Segmind, you agree to the following terms:

Geographic & Customer Restrictions

Access is strictly limited to business customers residing outside of the United States and Japan. Any use beyond these jurisdictions is expressly prohibited.

B2B Verification

Access is exclusively restricted to verified business entities. You represent and warrant that you are not an individual consumer, and that all end users of this model are businesses. Segmind reserves the right to verify business credentials prior to and during the course of access.

End User Identification

Segmind may, at its discretion or upon request by the model provider, require you to identify and provide information about your end customers, and to restrict or revoke their access as necessary to ensure compliance with these terms.

Inputs

Prompt*

Describe the video scene; use Shot 1: / Shot 2: for multi-shot or image 1 / video 1 for omni-reference. Best for cinematic narration or product demos.

Modern Rural Aesthetics, Cinematic Commercial quality, shot on Sony A7S3 or cinema camera, 4K/8K ultra-high resolution, Extreme Macro photography, natural and transparent lighting, healing ASMR atmosphere, no period drama aesthetics.

Scene: A well-organized modern farmhouse open-concept kitchen, lush vegetable garden visible in the background, bright sunny day.

Character: Modern lifestyle creator, long black hair casually pinned up with a single wooden hairpin, wearing a comfortable deep-blue cotton-linen set, fresh minimal makeup, focused and serene expression.

Shot 1 [00:00-00:05] - The Freshness: High-definition close-up. Morning sunlight hits the plants in side-backlight. The creator's bare hands pluck a vivid red tomato covered in glistening dewdrops from a vine. Razor-sharp focus capturing the fine fuzz on the tomato's surface and a water droplet sliding down. Background is premium blurred green bokeh.

Shot 2 [00:05-00:10] - The Craft: Indoor kitchen stove, full of lived-in warmth yet spotlessly clean. The creator chops vegetables with practiced, fluid efficiency. Macro lens captures the blade splitting through the ingredient with juice splashing mid-air. Cut to clay stove firebox with dancing orange flames, warm and authentic light.

Shot 3 [00:10-00:15] - The Moment: Wide shot transitioning to medium shot. A beautifully plated home-cooked dish placed on a natural wood table in the courtyard. The creator sits quietly, tucks a loose strand of hair behind her ear, and lifts a bite with chopsticks. Steam rises slowly in backlighting. Still and serene, evoking effortless modern slow-living.

First frame uRL

Image URL to anchor the starting frame; mutually exclusive with reference_images. Best for product shots and character-led scenes.

Drag & drop file or click to browse

Supports *

Duration

Video length in seconds: 4, 5, 6, 8, 10, 12, or 15; -1 for auto. Use 5s for social posts, 10-15s for product demos.

Range: 4 - 15

Aspect ratio

Output dimensions: 16:9 for widescreen, 9:16 for mobile Reels, 1:1 for feed posts, 21:9 for cinematic.

Advanced Parameters (8 options)

Business or Higher Subscription Required

Seedance 2.0 is available exclusively for Business plan subscribers and above.

Examples

Seedance 2.0 Fast - Multimodal AI Video Generation API

What is Seedance 2.0 Fast?

Seedance 2.0 Fast is ByteDance's speed-optimized video generation model, delivering approximately 2x faster output than Seedance 2.0 Standard at ~33% lower cost per generation. It retains the full multimodal architecture of Seedance 2.0: accepting text, image, video, and audio inputs simultaneously to produce cinematic video clips up to 15 seconds long.

Unlike most video models that require separate audio post-processing, Seedance 2.0 Fast natively co-generates synchronized audio — dialogue, sound effects, ambient textures, and music — in a single API call. It supports first-frame and last-frame image anchoring, up to 9 reference images for visual style or character consistency, and multi-shot prompting for sequential narrative control.

Outputs range from 4–15 seconds in duration, at 480p or 720p resolution, across seven aspect ratios including 16:9, 9:16, 1:1, and cinematic 21:9. The synchronous API returns binary MP4 data directly — no polling required.

Key Features

•~2x faster generation than Seedance 2.0 Standard — built for high-volume and iterative workflows
•Full multimodal input: text + up to 9 images + 3 videos + 3 audio files per generation
•Native audio co-generation: synchronized dialogue, SFX, ambient sound, and music in one pass
•First-frame and last-frame conditioning: precise motion endpoints for image-to-video workflows
•Multi-shot prompting: use Shot 1:, Shot 2: syntax for narrative scene sequencing
•7 aspect ratios: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, and adaptive
•Reproducible outputs: seed parameter for consistent iteration on prompt variants

Best Use Cases

Social media at scale — rapidly generate 9:16 Reels and Shorts from product images or brand assets without waiting for slow renders. Ad creative prototyping — iterate through multiple video concepts quickly before committing to full-quality renders. Developer video pipelines — cost-effective video generation for apps where turnaround time and per-request cost are primary constraints. E-commerce product demos — image-to-video with consistent product appearance and optional audio. Multi-scene narratives — multi-shot prompts convert storyboards into sequential video clips in one call. Clip chaining — use return_last_frame to extract the final frame and feed it into the next clip as first_frame_url.

Prompt Tips and Output Quality

Be explicit about camera movement, lighting, and subject behavior: "slow dolly forward through a sunlit forest, golden hour, dappled shadows on the ground." For multi-shot content, use Shot 1: and Shot 2: syntax. When using reference inputs, always cite them explicitly in the prompt — "Use image 1 as the character face, reference video 1 for camera movement" — the model interprets these as anchors.

At 720p, output is production-ready for social media and marketing deliverables. At 480p, generation is faster and suitable for previews and internal review. Enable generate_audio: true for final delivery only — audio co-generation adds processing time and is best saved for the final render pass.

FAQs

What is the difference between Seedance 2.0 and Seedance 2.0 Fast? Seedance 2.0 Fast is approximately 2x faster and ~33% cheaper per generation. It uses the same multimodal architecture but is optimized for speed and cost efficiency over peak output quality.

What input types does Seedance 2.0 Fast support? Text prompts, up to 9 reference images, up to 3 reference videos (max 50MB each), and up to 3 reference audio files (MP3, max 15MB each). All types can be combined in a single generation.

Does Seedance 2.0 Fast generate audio natively? Yes. Set generate_audio: true to enable co-generation of synchronized dialogue, sound effects, ambient textures, and music alongside the video — in a single API call.

What resolutions and aspect ratios are available? Resolutions: 480p and 720p. Aspect ratios: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, and adaptive.

How do I get reproducible results? Set the seed parameter to a fixed integer. Use -1 for a new random seed on each run.

Can I control both the start and end frame of the video? Yes. Set first_frame_url to anchor the opening frame and last_frame_url to define the closing frame. last_frame_url requires first_frame_url to be set.

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