在 CometAPI 上使用 POST /v1/videos 建立非同步的 ByteDance Seedance 影片任務。單一端點可支援 Seedance 1.0 Pro、1.5 Pro 與 2.0,並使用 multipart/form-data 請求。
curl https://api.cometapi.com/v1/videos \
-H "Authorization: Bearer <COMETAPI_KEY>" \
-F 'prompt="A slow cinematic camera push across a coastal landscape at sunrise"' \
-F 'model="doubao-seedance-2-0-fast"' \
-F 'seconds="5"' \
-F 'size="16:9"' \
-F 'resolution="720p"'{
"id": "task_abc123",
"task_id": "task_abc123",
"object": "video",
"model": "doubao-seedance-2-0-fast",
"status": "SUBMITTED",
"progress": 0,
"created_at": 1776681149
}model 欄位來選擇模型。此呼叫會立即回傳任務 id,而渲染會在背景持續進行。
| Model id | Tier | Notes |
|---|---|---|
doubao-seedance-2-0 | 2.0 | 2.0 系列中輸出品質最高。 |
doubao-seedance-2-0-fast | 2.0 | 2.0 的較快變體,適合快速迭代與預覽。 |
doubao-seedance-1-5-pro | 1.5 Pro | 支援 1080p。僅支援文字轉影片。 |
doubao-seedance-1-0-pro | 1.0 Pro | 支援 1080p,且可產生最短 2 秒的較短片段。僅支援文字轉影片。 |
| Field | Type | Required | Default | Allowed values |
|---|---|---|---|---|
prompt | string | yes | — | 任何文字 |
model | string | yes | — | doubao-seedance-2-0, doubao-seedance-2-0-fast, doubao-seedance-1-5-pro, doubao-seedance-1-0-pro |
seconds | integer | no | 5 | 依模型而定(見下方) |
size | string | no | 16:9 | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 |
resolution | string | no | 720p | 2.0 模型支援 480p、720p;1.5 Pro 與 1.0 Pro 支援 480p、720p、1080p |
input_reference | file | no | — | JPEG、PNG 或 WebP。僅 2.0 模型可接受。 |
| Model | seconds range |
|---|---|
doubao-seedance-2-0, doubao-seedance-2-0-fast | 4 到 15 |
doubao-seedance-1-5-pro | 4 到 12 |
doubao-seedance-1-0-pro | 2 到 10 |
400,並帶有 code: "InvalidParameter" 以及關於 duration 的訊息。
input_reference 檔案。若對 doubao-seedance-1-5-pro 或 doubao-seedance-1-0-pro 傳送 input_reference,會回傳 HTTP 400,訊息格式類似 the specified task_type r2v does not support model seedance-1-5-pro。這些模型僅可用於文字轉影片。
multipart/form-data。若要在 2.0 模型上執行圖轉影片,請在同一個請求中將圖片附加為 input_reference 部分:
curl https://api.cometapi.com/v1/videos \
-H "Authorization: Bearer <COMETAPI_KEY>" \
-F 'prompt="A slow cinematic camera push across a coastal landscape at sunrise."' \
-F 'model="doubao-seedance-2-0"' \
-F 'seconds="5"' \
-F 'size="16:9"' \
-F 'resolution="720p"' \
-F 'input_reference=@/path/to/reference.jpg'
/path/to/reference.jpg 替換為你想用作首幀錨點圖片的絕對或相對路徑。支援的格式為 JPEG、PNG 與 WebP。
Poll the task
input_reference 傳送到不支援圖轉影片的模型時,此端點會回傳 HTTP 400。當 bearer token 缺失或無效時,則會回傳 HTTP 401。錯誤主體使用兩種格式之一;確切欄位請參閱 playground 中的 400 與 401 範例。Bearer token authentication. Use your CometAPI key.
Text prompt that describes the video. Required.
"A slow cinematic camera push across a coastal landscape at sunrise."
Seedance model id. Choose doubao-seedance-2-0 for the highest quality 2.0 output, doubao-seedance-2-0-fast for quick iteration on 2.0, doubao-seedance-1-5-pro for the 1.5 Pro tier, or doubao-seedance-1-0-pro for the 1.0 Pro tier. Only the two 2.0 models accept input_reference.
doubao-seedance-2-0, doubao-seedance-2-0-fast, doubao-seedance-1-5-pro, doubao-seedance-1-0-pro "doubao-seedance-2-0-fast"
Video duration in seconds. The accepted range depends on the model: doubao-seedance-2-0 and doubao-seedance-2-0-fast accept 4 to 15, doubao-seedance-1-5-pro accepts 4 to 12, and doubao-seedance-1-0-pro accepts 2 to 10. The default is 5 for every model.
2 <= x <= 155
Output aspect ratio. All Seedance models accept the same set of values.
21:9, 16:9, 4:3, 1:1, 3:4, 9:16 "16:9"
Output resolution. 480p and 720p are accepted by every model; 1080p is supported only by doubao-seedance-1-5-pro and doubao-seedance-1-0-pro.
480p, 720p, 1080p "720p"
Optional reference image. When included, the job runs in image-to-video mode and uses the image as the visual anchor. Only doubao-seedance-2-0 and doubao-seedance-2-0-fast accept this field; sending it with a 1.0 Pro or 1.5 Pro model returns HTTP 400.
Task created. Save the returned id and poll GET /v1/videos/{id}.
Task id. Use it as the path parameter for GET /v1/videos/{id}.
Object type, always video.
Echo of the requested model id.
Initial task status. A newly created task is returned as SUBMITTED.
SUBMITTED, IN_PROGRESS, SUCCESS, FAILED, ERROR Completion percentage. 0 at creation.
0 <= x <= 100Task creation time as a Unix timestamp in seconds.
Alias of id returned for compatibility. The value matches id.
curl https://api.cometapi.com/v1/videos \
-H "Authorization: Bearer <COMETAPI_KEY>" \
-F 'prompt="A slow cinematic camera push across a coastal landscape at sunrise"' \
-F 'model="doubao-seedance-2-0-fast"' \
-F 'seconds="5"' \
-F 'size="16:9"' \
-F 'resolution="720p"'{
"id": "task_abc123",
"task_id": "task_abc123",
"object": "video",
"model": "doubao-seedance-2-0-fast",
"status": "SUBMITTED",
"progress": 0,
"created_at": 1776681149
}