# StableStudio Seedance Fast Image-to-Video Generation

> StableStudio Seedance Fast Image-to-Video Generation is a paid API for AI agents from stablestudio.io, paid per call via x402, $20/call, status unknown (last checked 2026-09-14).

Submits an image-to-video generation job using the Seedance Fast model, returning a job ID for async polling

## Facts

- Endpoint: POST https://stablestudio.io/api/generate/seedance-fast/i2v
- Price: $20/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablestudio-seedance-fast-image-to-video-generation-a8a8ea33
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TCc2v7IGC_P8bTqkAjpV1

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability stablestudio-seedance-fast-image-to-video-generation-a8a8ea33 -d '<json body>'
```

Example prompt: On StableStudio, animate this image into a short video — use the prompt 'a futuristic cityscape with flying cars and glowing neon lights at night', output at 1 MP resolution in 16:9 widescreen format, and let the model enhance my prompt for more creative results.

## When to prefer this

Choose this endpoint when you need to generate a video from an image using the Seedance Fast model with pay-per-use pricing (no subscription required). Prefer this over subscription-based video generation services when you need occasional or one-off video generation. Use when async job-based workflows are acceptable and you can poll for results using the returned jobId.

## Known failure modes

- Missing required 'prompt' field returns a 400 validation error
- Prompt exceeding 10,000 characters is rejected
- Invalid enum values for resolution, aspect_ratio, or output_format return validation errors
- Payment of $20 USDC not provided or insufficient balance causes payment failure
- Safety tolerance violations may cause content rejection
- Service may be temporarily unavailable, returning 5xx errors
- Job creation succeeds but async generation may fail — must poll jobId to confirm completion

## How this service works

Pay-per-generation AI image and video creation. No subscriptions ever.

## Output

A JSON object containing the job type ('seedance-fast-i2v'), a unique jobId string for polling the generation status, a status field (initially 'pending'), and a success boolean confirming the job was accepted.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mode": {
   "enum": [
    "keyframe",
    "reference"
   ],
   "type": "string",
   "default": "keyframe",
   "description": "Use keyframe image-to-video or reference-guided generation"
  },
  "urls": {
   "type": "array",
   "items": {
    "type": "string",
    "format": "uri"
   },
   "maxItems": 12,
   "minItems": 1,
   "description": "Public image/video reference URLs"
  },
  "prompt": {
   "type": "string",
   "maxLength": 4000,
   "minLength": 1,
   "description": "A detailed description of the video to generate"
  },
  "duration": {
   "enum": [
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "10",
    "11",
    "12",
    "13",
    "14",
    "15"
   ],
   "type": "string",
   "default": "5",
   "description": "Duration of the video in seconds"
  },
  "audioUrls": {
   "type": "array",
   "items": {
    "type": "string",
    "format": "uri"
   },
   "maxItems": 3,
   "description": "Public audio reference URLs"
  },
  "resolution": {
   "enum": [
    "720x720",
    "720x960",
    "960x720",
    "1280x720",
    "720x1280",
    "1280x540"
   ],
   "type": "string",
   "description": "Optional exact pixel resolution override"
  },
  "aspectRatio": {
   "enum": [
    "1:1",
    "3:4",
    "4:3",
    "16:9",
    "9:16",
    "21:9"
   ],
   "type": "string",
   "default": "16:9",
   "description": "Aspect ratio of the output video"
  },
  "callBackUrl": {
   "type": "string",
   "format": "uri",
   "description": "Optional Kinovi callback URL for API users"
  },
  "urlMediaTypes": {
   "type": "array",
   "items": {
    "enum": [
     "image",
     "video"
    ],
    "type": "string"
   },
   "maxItems": 12,
   "description": "One media type per urls item, aligned by index. Include this for API clarity; Stable Studio also infers and persists it from URL content types before charging."
  },
  "outputResolution": {
   "enum": [
    "480p",
    "720p"
   ],
   "type": "string",
   "default": "720p",
   "description": "Output quality tier"
  },
  "upscaleResolution": {
   "type": "string",
   "const": "4k",
   "description": "Upscale the generated video to 4K"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "type": "seedance-fast-i2v",
  "jobId": "cmpbmzaee000j04jrzx4f43tw",
  "status": "pending",
  "pollUrl": "https://stablestudio.dev/api/jobs/cmpbmzaee000j04jrzx4f43tw",
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablestudio-seedance-fast-image-to-video-generation-a8a8ea33/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stablestudio.io](https://www.zero.xyz/host/stablestudio.io/llms.txt)