Seedance 1.5 Pro：內建音訊與口型同步的電影級影片生成 | RunComfy
Seedance 1.5 Pro 從文字或圖像生成電影級多語言影片，具有同步對話、鏡頭控制和無縫音視訊敘事，適用於廣告、配音和創意短片製作。
Table of contents
1. Get started
Use RunComfy's API to run bytedance/seedance-v1.5-pro/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-v1.5-pro/image-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A gentle breeze blows softly, and the real girl's body remains stable. Her long hair, including the hair below, flutters naturally. The anime girl on the phone screen first closes her eyes for 2 seconds, then slowly opens them, with her mouth remaining still and silent. Her hair, including the hair below, also flutters naturally in the breeze in perfect synchronization. The rhythm and direction of the hair fluttering of the two girls are exactly the same. The subway train moves rapidly, emitting a low rumbling echo. ",
"first_frame_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7272/media-files/input-1-1.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/bytedance/seedance-v1.5-pro/image-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A gentle breeze blows softly, and the real girl's body remains stable. Her long hair, including the hair below, flutters naturally. The anime girl on the phone screen first closes her eyes for 2 seconds, then slowly opens them, with her mouth remaining still and silent. Her hair, including the hair below, also flutters naturally in the breeze in perfect synchronization. The rhythm and direction of the hair fluttering of the two girls are exactly the same. The subway train moves rapidly, emitting a low rumbling echo. ",
"first_frame_image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7272/media-files/input-1-1.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",
"first_frame_image_url"
],
"properties": {
"prompt": {
"title": "提示詞",
"description": "提示詞應少於500個字元以獲得更好的效果。",
"type": "string",
"default": "A gentle breeze blows softly, and the real girl's body remains stable. Her long hair, including the hair below, flutters naturally. The anime girl on the phone screen first closes her eyes for 2 seconds, then slowly opens them, with her mouth remaining still and silent. Her hair, including the hair below, also flutters naturally in the breeze in perfect synchronization. The rhythm and direction of the hair fluttering of the two girls are exactly the same. The subway train moves rapidly, emitting a low rumbling echo. "
},
"first_frame_image_url": {
"title": "起始圖片",
"description": "",
"type": "string",
"validations": [
{
"validation_rule": "width_pixels<",
"validation_value": 6000,
"validation_error": "上傳圖片的寬度和高度不得超過6000像素。"
},
{
"validation_rule": "height_pixels<",
"validation_value": 6000,
"validation_error": "上傳圖片的寬度和高度不得超過6000像素。"
},
{
"validation_rule": "width_pixels>",
"validation_value": 300,
"validation_error": "上傳圖片的寬度和高度不得低於300像素。"
},
{
"validation_rule": "height_pixels>",
"validation_value": 300,
"validation_error": "上傳圖片的寬度和高度不得低於300像素。"
},
{
"validation_rule": "width/height>",
"validation_value": 0.4,
"validation_error": "寬高比應在0.4到2.5之間。"
},
{
"validation_rule": "width/height<",
"validation_value": 2.5,
"validation_error": "寬高比應在0.4到2.5之間。"
},
{
"validation_rule": "file_size_mb<",
"validation_value": 30,
"validation_error": "檔案大小必須小於30MB。"
}
],
"default": "https://playgrounds-storage-public.runcomfy.net/tools/7272/media-files/input-1-1.png"
},
"resolution": {
"title": "解析度",
"description": "",
"type": "string",
"enum": [
"480p",
"720p",
"1080p"
],
"default": "480p"
},
"ratio": {
"title": "寬高比（寬:高）",
"description": "",
"type": "string",
"enum": [
"16:9",
"4:3",
"1:1",
"3:4",
"9:16",
"21:9",
"adaptive"
],
"default": "adaptive"
},
"duration": {
"title": "時長",
"description": "",
"type": "integer",
"enum": [
4,
5,
6,
7,
8,
9,
10,
11,
12
],
"default": 5
},
"generate_audio": {
"title": "生成音訊",
"description": "",
"type": "boolean",
"default": true
},
"camera_fixed": {
"title": "相機固定",
"description": "設定影片中相機是否保持固定。",
"type": "boolean",
"default": true
}
}
}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" }
}
}
}
}RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.