Seedance 2.0 Fast — Start-End Frame to Video

Faster start-end frame to video generation with ByteDance’s Seedance 2.0 Fast model

POST /v1/jobs/submit

Seedance 2.0 Fast — Start-End Frame to Video

cURL

curl --request POST \
  --url https://api.muvi.video/v1/jobs/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "<string>",
  "input": {
    "prompt": "<string>",
    "start_frame_url": "<string>",
    "end_frame_url": "<string>",
    "duration": "<string>",
    "resolution": "<string>",
    "fps": "<string>"
  }
}
'

200

{
  "jobId": "<string>",
  "status": "<string>",
  "estimatedCompletionTime": "<string>",
  "costMicroCents": 123
}

Generate a smooth video transition between two frames with ByteDance’s Seedance 2.0 Fast — optimized for shorter processing time and lower cost. Provide a start image, an end image, and a prompt describing the motion in between.

Property	Value
Provider	ByteDance
Model	Seedance 2.0 Fast
Capability	Start-End Frame to Video
Base Cost	200,000 micro-cents/second ($0.20/sec)
Processing Time	~180 seconds

Request Body

model · string · required

Model slug. Use bytedance/seedance-2.0-fast/start-end-frame-to-video for fast start-end frame to video generation.

input · object · required

Input parameters for start-end frame to video generation.

Hide properties

prompt · string · required

Text description of the motion or transition (max 5000 characters).

start_frame_url · string · required

URL of the start frame image.

end_frame_url · string · required

URL of the end frame image.

duration · string

Video duration in seconds. Default: 5. Options: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15.

resolution · string

Output resolution. Default: 720p. Options: 720p, 1440p.

fps · string

Frames per second. Default: 24. Options: 24, 30, 60.

webhookUrl · string

HTTPS URL to receive a webhook notification when the job completes or fails.

Pricing

Base cost: 200,000 micro-cents per second ($0.20/sec)

finalCost = baseCost × duration × resolution × fps

Factor	Option	Multiplier
Duration	4	4x
	5	5x
	6	6x
	7	7x
	8	8x
	9	9x
	10	10x
	11	11x
	12	12x
	13	13x
	14	14x
	15	15x
Resolution	720p	1x
	1440p	1.5x
FPS	24	1x
	30	1.1x
	60	1.25x

Default cost: 5 seconds, 720p, 24 fps = 200,000 × 5 × 1 × 1 = 1,000,000 micro-cents ($1.00)

Response

jobId · string

Unique identifier for the submitted job.

status · string

Initial job status. Always "pending" on successful submission.

estimatedCompletionTime · string

ISO 8601 timestamp of the estimated completion time.

costMicroCents · number

The cost of the job in micro-cents.

Code Examples

cURL

curl -X POST https://api.muvi.video/v1/jobs/submit \
  -H "Authorization: Bearer $PIXELBYTE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance/seedance-2.0-fast/start-end-frame-to-video",
    "input": {
      "prompt": "The flower opens its petals as morning sunlight gradually fills the scene",
      "start_frame_url": "https://example.com/image.jpg",
      "end_frame_url": "https://example.com/image.jpg",
      "duration": "5",
      "resolution": "720p",
      "fps": "24"
    }
  }'