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Seedance 2.5 AI Video Generator - Free Prompt Builder

Build perfect prompts and API settings for ByteDance Seedance 2.5. Craft 30-second 4K text-to-video and image-to-video shots with camera, style, and audio control.

Describe your scene — Seedance 2.5 generates up to 30 seconds of native audio-visual output.

Tip: put spoken dialogue in "double quotes" for better synced audio.

10s
Optimized Seedance prompt

a cinematic scene. with natural ambient sound.

API request body (ModelArk)
{
  "model": "dreamina-seedance-2-5-260628",
  "content": [
    {
      "type": "text",
      "text": "a cinematic scene. with natural ambient sound."
    }
  ],
  "resolution": "720p",
  "ratio": "16:9",
  "duration": 10,
  "generate_audio": true,
  "camera_fixed": false,
  "output_format": "mp4"
}

Your files are processed locally in your browser. Nothing is uploaded to any server.

How to Use the Seedance 2.5 Generator

1

Describe Your Shot

Choose text-to-video or image-to-video, then describe the scene, subject, and motion you want. Be specific about action and mood — Seedance 2.5 follows detailed prompts closely.

2

Dial In the Settings

Pick your aspect ratio, duration up to 30 seconds, resolution up to 4K, camera movement, and visual style. Toggle native audio for synchronized sound.

3

Copy and Generate

Copy the optimized prompt or the ready-to-send API request body, paste it into your Seedance 2.5 provider (fal, Replicate, PiAPI, or BytePlus), and render your clip.

Seedance 2.5 Generator FAQ

Does this tool generate the video for me?

This is a free prompt and parameter builder. It writes an optimized Seedance 2.5 prompt and a ready-to-use API request body that you run on your chosen provider. Everything runs in your browser — nothing is uploaded.

What makes Seedance 2.5 different?

Seedance 2.5 generates a single continuous clip up to 30 seconds at native 4K, accepts up to 50 multimodal references, and produces synchronized audio in the same pass. ByteDance also reports roughly 20% better prompt adherence than earlier versions.

Which parameters can I control?

You can set the prompt, aspect ratio (16:9, 9:16, 1:1, 4:3, 3:4, 21:9), duration, resolution, seed for reproducibility, and whether to generate native audio. The builder writes all of these into a clean JSON request.