Kling O1 Reference Image to Video: Image-to-Video with Motion Fidelity on playground and API | RunComfy
kling/kling-video-o1/image-to-video/reference
Generate cinematic videos from images or text using reference footage, preserving motion style, camera angles, and scene continuity for unified, high-fidelity visual storytelling.
Table of contents
1. Get started
Use RunComfy's API to run kling/kling-video-o1/image-to-video/reference. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/kling/kling-video-o1/image-to-video/reference \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "Replace the character in the video with @Element1, maintaining the same movements and camera angles. Transform the landscape into @Image1",
"elements": [
{
"frontal_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-2.png",
"reference_image_urls": [
"https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-3.jpeg"
]
}
],
"image_urls": [
"https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-4.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/kling/kling-video-o1/image-to-video/reference \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "Replace the character in the video with @Element1, maintaining the same movements and camera angles. Transform the landscape into @Image1",
"elements": [
{
"frontal_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-2.png",
"reference_image_urls": [
"https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-3.jpeg"
]
}
],
"image_urls": [
"https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-4.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": [
"prompt",
"elements",
"image_urls"
],
"properties": {
"prompt": {
"title": "Prompt",
"description": "Reference elements as @Element1, @Element2 and images as @Image1, @Image2 in order. Spell these elements words strictly as they are.",
"type": "string",
"default": "Replace the character in the video with @Element1, maintaining the same movements and camera angles. Transform the landscape into @Image1"
},
"image_urls": {
"title": "Reference Images",
"description": "Additional reference images for style/appearance. Reference in prompt as @Image1, @Image2, etc. Maximum 7 total across elements + reference images + start image.",
"type": "array",
"items": {
"type": "string",
"format": "image_uri"
},
"default": [
"https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-4.png"
],
"maxItems": 7,
"minItems": 0
},
"elements": {
"title": "Elements",
"description": "Provide characters/objects to include. Reference in prompt as @Element1, @Element2, etc. Maximum 7 total across elements + reference images + start image.",
"type": "array",
"default": [
{
"frontal_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-2.png",
"reference_image_urls": [
"https://playgrounds-storage-public.runcomfy.net/tools/7244/media-files/input-1-3.jpeg"
]
}
],
"items": {
"frontal_image_url": {
"title": "Frontal Image Url",
"description": "The frontal image of the element (main view).Max file size: 10.0MB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s",
"type": "string",
"format": "image_uri",
"default": ""
},
"reference_image_urls": {
"title": "Reference Image Urls",
"description": "Additional reference images from different angles. 1-4 images supported. At least one image is required.",
"type": "array",
"format": "image_uris",
"items": {
"type": "string",
"format": "image_uri"
},
"default": [],
"maxItems": 4,
"minItems": 1
}
},
"maxItems": 7,
"minItems": 0
},
"duration": {
"title": "Duration (seconds)",
"description": "Video duration in seconds. Only 5 and 10 are supported.",
"type": "String",
"enum": [
"5",
"10"
],
"default": "5"
},
"aspect_ratio": {
"title": "Aspect Ratio (W:H)",
"description": "The aspect ratio of the generated video frame.",
"type": "string",
"enum": [
"16:9",
"9:16",
"1:1"
],
"default": "16:9"
}
}
}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" }
}
}
}
}