runwayml/runway-gen-4/turbo/image-to-video
Maintain consistent characters, objects, and scenes with strong prompt alignment, realistic motion, and flexible camera control for cohesive, production-ready videos.
Table of contents
1. Get started
Use RunComfy's API to run runwayml/runway-gen-4/turbo/image-to-video. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/runwayml/runway-gen-4/turbo/image-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"promptImage": "https://playgrounds-storage-public.runcomfy.net/tools/7026/media-files/usecase1-1-input.png"
}'2. Authentication
Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.
3. API reference
Submit a request
Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/runwayml/runway-gen-4/turbo/image-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"promptImage": "https://playgrounds-storage-public.runcomfy.net/tools/7026/media-files/usecase1-1-input.png"
}'Monitor request status
Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").
curl --request GET \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
--header "Authorization: Bearer <token>"Retrieve request results
Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.
curl --request GET \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
--header "Authorization: Bearer <token>"Cancel a request
Cancel a queued job by request_id, in-progress jobs cannot be cancelled.
curl --request POST \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
--header "Authorization: Bearer <token>"4. File inputs
Hosted file (URL)
Provide a publicly reachable HTTPS URL. Ensure the host allows server‑side fetches (no login/cookies required) and isn't rate‑limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre‑signed URLs for private assets.
5. Schema
Input schema
{
"type": "object",
"title": "Input",
"required": [
"promptImage"
],
"properties": {
"promptText": {
"title": "Prompt",
"description": "",
"type": "string",
"maxLength": 1000,
"default": "The subject sits in the driver's seat of a parked car in the forest. She starts the engine and slowly begins to drive forward along the narrow dirt path. Sunlight flickers through the trees as the car moves. The camera remains inside the car, handheld and steady, subtly tracking the subject's profile as she drives. Cinematic live-action, warm forest tones, shallow depth of field. "
},
"promptImage": {
"title": "Image",
"description": "Use images under 16MB, with dimensions below 8000x8000 pixels and an aspect ratio between 1:2 and 2:1.",
"type": "string",
"validations": [
{
"validation_rule": "width_pixels<",
"validation_value": 8000,
"validation_error": "The uploaded image width and height must not exceed 8000 pixels."
},
{
"validation_rule": "height_pixels<",
"validation_value": 8000,
"validation_error": "The uploaded image width and height must not exceed 8000 pixels."
},
{
"validation_rule": "width/height>",
"validation_value": 0.5,
"validation_error": "The aspect ratio range should be 1:2 to 2:1."
},
{
"validation_rule": "width/height<",
"validation_value": 2,
"validation_error": "The aspect ratio range should be 1:2 to 2:1."
},
{
"validation_rule": "file_size_mb<",
"validation_value": 16,
"validation_error": "File size must be less than 16 MB."
}
],
"default": "https://playgrounds-storage-public.runcomfy.net/tools/7026/media-files/usecase1-1-input.png"
},
"ratio": {
"title": "Aspect Ratio (W:H)",
"description": "",
"type": "string",
"enum": [
"1584:672",
"1280:720",
"1104:832",
"960:960",
"832:1104",
"720:1280"
],
"default": "1280:720"
},
"duration": {
"title": "Duration",
"description": "",
"type": "integer",
"enum": [
5,
10
],
"default": 5
},
"seed": {
"title": "Seed",
"description": "",
"maximum": 4294967295,
"minimum": 0,
"type": "integer",
"default": 936116745
}
}
}Output schema
{
"output": {
"type": "object",
"properties": {
"image": {
"type": "string",
"format": "uri",
"description": "single image URL"
},
"video": {
"type": "string",
"format": "uri",
"description": "single video URL"
},
"images": {
"type": "array",
"description": "multiple image URLs",
"items": { "type": "string", "format": "uri" }
},
"videos": {
"type": "array",
"description": "multiple video URLs",
"items": { "type": "string", "format": "uri" }
}
}
}
}