Use RunComfy's API to run bytedance/seedance-1-0/lite/image-to-video. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/bytedance/seedance-1-0/lite/image-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "",
"first_frame_image_url": ""
}'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.
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/bytedance/seedance-1-0/lite/image-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "",
"first_frame_image_url": ""
}'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 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 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>"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.
{
"type": "object",
"title": "Input",
"required": [
"prompt",
"first_frame_image_url"
],
"properties": {
"prompt": {
"title": "Prompt",
"description": "",
"type": "string",
"maxLength": 1900
},
"first_frame_image_url": {
"title": "First Frame Image",
"description": "",
"type": "string",
"validations": [
{
"validation_rule": "width_pixels<",
"validation_value": 6000,
"validation_error": "The uploaded image width and height must not exceed 6000 pixels."
},
{
"validation_rule": "height_pixels<",
"validation_value": 6000,
"validation_error": "The uploaded image width and height must not exceed 6000 pixels."
},
{
"validation_rule": "width_pixels>",
"validation_value": 300,
"validation_error": "The uploaded image width and height must not be less than 300 pixels."
},
{
"validation_rule": "height_pixels>",
"validation_value": 300,
"validation_error": "The uploaded image width and height must not be less than 300 pixels."
},
{
"validation_rule": "width/height>",
"validation_value": 0.4,
"validation_error": "The aspect ratio range should be between 0.4 and 2.5."
},
{
"validation_rule": "width/height<",
"validation_value": 2.5,
"validation_error": "The aspect ratio range should be between 0.4 and 2.5."
},
{
"validation_rule": "file_size_mb<",
"validation_value": 30,
"validation_error": "File size must be less than 30 MB."
}
]
},
"last_frame_image_url": {
"title": "Last Frame Image",
"description": "Note: The last frame image will not take effect when the resolution is set to 1080P.",
"type": "string",
"validations": [
{
"validation_rule": "width_pixels<",
"validation_value": 6000,
"validation_error": "The uploaded image width and height must not exceed 6000 pixels."
},
{
"validation_rule": "height_pixels<",
"validation_value": 6000,
"validation_error": "The uploaded image width and height must not exceed 6000 pixels."
},
{
"validation_rule": "width_pixels>",
"validation_value": 300,
"validation_error": "The uploaded image width and height must not be less than 300 pixels."
},
{
"validation_rule": "height_pixels>",
"validation_value": 300,
"validation_error": "The uploaded image width and height must not be less than 300 pixels."
},
{
"validation_rule": "width/height>",
"validation_value": 0.4,
"validation_error": "The aspect ratio range should be between 0.4 and 2.5."
},
{
"validation_rule": "width/height<",
"validation_value": 2.5,
"validation_error": "The aspect ratio range should be between 0.4 and 2.5."
},
{
"validation_rule": "file_size_mb<",
"validation_value": 30,
"validation_error": "File size must be less than 30 MB."
}
]
},
"resolution": {
"title": "Resolution",
"description": "",
"type": "string",
"enum": [
"480p",
"720p",
"1080p"
],
"default": "480p"
},
"duration": {
"title": "Duration",
"description": "",
"type": "integer",
"enum": [
5,
10
],
"default": 5
}
}
}{
"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" }
}
}
}
}