Seedance 2.5 API

Video·seedance-2.5·by Bytedance

Seedance 2.5 Text-to-Video turns prompts into coherent 30-second clips with synchronized audio and timestamped shot control for cinematic storytelling.

Runtime (p50)
4m
Estimated price
From $1.15
Call the API
prediction.sh
sh
curl -X POST \
  -H "Authorization: Bearer $EACHLABS_API_KEY" \
  -H "Content-Type: application/json" \
  --data '{
    "model": "bytedance-seedance-2-5-text-to-video",
    "version": "0.0.1",
    "input": {
        "prompt": "Shot 1 (wide, 0–2s): A miniature city made entirely of desserts sits in darkness. A single candy streetlamp flickers on, then another — warm caramel light spreading across chocolate-brick buildings, frosting-covered rooftops and cobblestones of pressed biscuit, the sugar city waking from the dark.\n\nShot 2 (low angle, 2–4s): The camera glides at ground level down a licorice-paved street. A gingerbread man in an icing-piped apron steps out of a gingerbread doorway carrying a tray of real miniature pastries, while a gingerbread woman with a frosted skirt and candy-button details walks along the sidewalk beside two smaller gingerbread children, all of them waddling stiffly on flat cookie legs. Another gingerbread woman pauses to sit on a peppermint bench as a jelly bus wobbles past — everything moving with soft claymation charm.\n\nShot 3 (tracking, 4–6s): A chocolate train rounds a wafer bridge, headlights of glowing sugar cutting through the dark. A gingerbread man and a gingerbread woman stop at the railing and turn to watch it pass. The camera tracks alongside in slow motion, caramel light flickering through its windows, powdered-sugar snow drifting down past the lens.\n\nShot 4 (aerial, 6–8s): The camera rises slowly straight up above the whole dessert city, revealing it glowing from above — every candy lamp lit, every frosted window warm, the chocolate train winding through below, tiny gingerbread men and women moving along the streets like pedestrians, an edible world alive against the dark.\n\nStyle: Macro cinematic lens, shallow depth of field, glossy chocolate and matte frosting textures, warm baked cookie surfaces with white icing detailing, warm caramel glow, slow deliberate camera movement throughout.",
        "duration": "8",
        "resolution": "720p",
        "aspect_ratio": "16:9",
        "output_format": "mp4",
        "generate_audio": true
    },
    "webhook_url": ""
}' \
  https://api.eachlabs.ai/v1/prediction/
Documentation8 sections
  • Overview

    Bytedance | Seedance 2.5 | Text to Video Overview

    Bytedance | Seedance 2.5 | Text to Video turns text prompts into cinematic video clips with synchronized audio and stronger shot-level control. It is designed for creators who need a model that can hold character identity, camera motion, lighting, and scene continuity inside a single generation. According to available Seedance 2.5 reporting, the model’s standout differentiator is its ability to generate up to 30-second clips in one pass while preserving coherence across scene changes, rather than stitching shorter outputs together.

    As a ByteDance model in the Seedance family, it fits workflows that need more than simple prompt-to-clip generation. It is aimed at cinematic storytelling, product visuals, and multi-shot sequences where audio and visual timing matter. The Seedance 2.5 name appears to be the product name used in public materials, while “Bytedance | Seedance 2.5 | Text to Video” is the page-level model label used on each::labs.

  • Capabilities

    Capabilities

    • Generates 30-second video clips in a single pass.
    • Produces synchronized audio alongside video generation.
    • Maintains scene coherence across internal shot changes within one clip.
    • Supports multi-reference guidance for characters, environments, style, and audio.
    • Enables directed camera control through prompt language and reference steering.
    • Improves prompt adherence versus earlier Seedance versions in public reporting.
    • Targets cinematic storytelling, including multi-shot narrative structure.
    • Fits the broader Bytedance text-to-video workflow for content creation, ad concepts, and scene prototyping.
  • Use cases

    Use Cases for Bytedance | Seedance 2.5 | Text to Video

    Creators can use Bytedance | Seedance 2.5 | Text to Video to build short cinematic scenes with audio already aligned to the visuals. A prompt like “A rainy rooftop conversation at night, close-up dialogue, slow camera push, subtle city ambience” is a strong fit because the model is built for synchronized storytelling.

    Marketers can generate product spots with controlled composition and lighting. For example: “Luxury perfume ad, glass bottle on black silk, rotating spotlight, reflective surfaces, elegant mood.” The model’s multi-reference and camera control features make it useful for branded visual direction.

    Designers and developers can prototype scene ideas before a full production workflow. A prompt such as “Minimal white product room, floating UI panels, smooth orbit camera, clean tech aesthetic” helps test visual direction quickly. The Bytedance | Seedance 2.5 | Text to Video API is especially relevant when teams need repeatable generation with structured prompts.

    Motion teams can also use it for multi-shot narrative tests, such as “A traveler enters a market, exchanges a map, and exits through a blue archway, continuous camera movement, evolving ambient sound.”

  • Tips & tricks

    Tips and Tricks

    Write prompts like a director’s brief. Describe the subject first, then the action, camera, mood, and pacing. Seedance 2.5 coverage highlights better prompt adherence, so structured prompts should work better than vague ideas.

    Use shot language when you want stronger visual control: mention “close-up,” “wide shot,” “slow dolly-in,” “orbiting camera,” or “single continuous shot.” If you are using references, keep them grouped by purpose, such as character, environment, product, or style, because the model is built to use multiple inputs together.

    Example prompts: “A lone astronaut walking through a neon desert at dusk, slow dolly shot, cinematic lighting, synchronized ambient audio.” “Product commercial for a silver smartwatch on a rotating pedestal, clean studio background, crisp reflections, premium advertising style.” “A warrior enters a torch-lit hall, camera pans left, dramatic reveal, orchestral audio swell.”

  • Technical spec

    Technical Specifications

    • Model type: text-to-video with native audio-video generation support.
    • Max clip length: up to 30 seconds per generation in reported Seedance 2.5 launches.
    • Resolution: reported support includes 480p, 720p, and up to 4K in secondary coverage.
    • Aspect ratios: public Seedance 2.0 documentation indicates multi-aspect output support; Seedance 2.5 coverage emphasizes cinematic output, but exact ratios are not consistently specified in the sources.
    • Inputs: text prompts, with broader Seedance family support for image, audio, and video references.
    • Output: generated video with synchronized audio; common export format is described as MP4 in model coverage.
    • Reference capacity: reports range from 30 to 50 multimodal reference assets, depending on source and product framing.
    • Processing time: no authoritative public benchmark is confirmed in the sources; runtime varies by clip length, resolution, and reference load.
  • Things to be aware of

    Things to Be Aware Of

    Seedance 2.5 is strong at controlled generation, but results depend heavily on prompt structure and reference quality. If the prompt omits camera direction, subject detail, or scene order, the output may drift from the intended story. Public sources also disagree on exact resolution and reference limits, which suggests that available features may vary by product tier or implementation.

    Large reference sets can improve control, but they also make prompt planning more important. Users often expect one short prompt to handle character consistency, lighting, motion, and audio all at once. This model performs better when those requirements are clearly separated and described.

  • Key considerations

    Key Considerations

    Bytedance | Seedance 2.5 | Text to Video is best when you want a single, coherent clip with strong motion continuity and built-in audio timing. It is especially useful for cinematic scenes, brand stories, and storyboard-style output where prompt adherence and scene control matter more than rapid rough drafts.

    Before using the model, plan for a prompt that includes subject, action, camera movement, setting, and visual style. If your workflow depends on reference materials, Seedance 2.5 appears strongest when you provide clear supporting assets instead of relying on text alone. For users comparing the Bytedance | Seedance 2.5 | Text to Video API against simpler generators, the tradeoff is usually greater control and longer clips in exchange for more careful prompting and heavier reference management.

  • Limitations

    Limitations

    Public sources do not confirm a single official spec sheet for every deployment of Bytedance | Seedance 2.5 | Text to Video, so resolution, aspect ratio, and reference limits may differ across implementations. The model is not positioned as a universal editor, and complex local edits, exact choreography, or highly precise text rendering may still be unreliable.

    It also cannot guarantee perfect continuity in every case, especially when prompts contain many characters, rapid action, or conflicting scene instructions.

Related models

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* FAQ

About Seedance 2.5 API

01 / 05

What is Seedance 2.5 Text-to-Video?

Seedance 2.5 Text-to-Video is ByteDance's video generation model that turns a written prompt into a finished clip with picture and sound together. It generates up to 30 seconds of coherent video in a single request, so a complete story arc fits in one take without stitching separate segments.