Seedance 2.0 Fast API 调用参考

用一个 PopNow API 密钥，就能在自己的代码里调用 Seedance 2.0 Fast。下面列出要填的调用名、这个型号接受的每个输入字段、每次请求花多少积分，以及一段可以直接粘进终端运行的请求。

参数说明直接取自型号的输入 schema，暂时只有英文。

一览

出品方: ByteDance
产出: 视频
起价: 3.38 积分每秒成片 ($0.0338)
一般耗时: 约 138 秒
调用名: bytedance/seedance-2.0-fast/text-to-video
bytedance/seedance-2.0-fast/image-to-video
bytedance/seedance-2.0-fast/reference-to-video
bytedance/seedance-2.0-fast/video-extend

1 积分 = 0.01 美元。任务受理时先冻结可能的最高费用，完成后按实际用量结算、向上取整到整积分，多冻的退回；失败的任务不扣积分。想在运行前知道确切数字，先调 POST /api/v1/jobs/quote。

生成视频

bytedance/seedance-2.0-fast/text-to-video

价格

选项	积分 (每秒成片)	美元
`generate_audio = false, resolution = 480p`	6.75	$0.0675
`generate_audio = true, resolution = 480p`	6.75	$0.0675
`enable_web_search = true, generate_audio = false, resolution = 480p`	10.53	$0.1053
`enable_web_search = true, generate_audio = true, resolution = 480p`	10.53	$0.1053
`generate_audio = false, resolution = 720p`	14.52	$0.1452
`generate_audio = true, resolution = 720p`	14.52	$0.1452
`enable_web_search = true, generate_audio = false, resolution = 720p`	22.32	$0.2232
`enable_web_search = true, generate_audio = true, resolution = 720p`	22.32	$0.2232

参数

字段	类型	默认值	取值范围	作用
`prompt`必填	`string`	—	—	Describe the intended subject, action, camera, light, sound, and constraints.
`aspect_ratio`可选	`string`	`adaptive`	16:9, 9:16, 4:3, 3:4, 1:1, 21:9, adaptive	Output frame ratio.
`resolution`可选	`string`	`720p`	480p, 720p	Output resolution.
`duration_seconds`可选	`integer`	`5`	-1, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15	Requested output duration in seconds. Pass -1 for smart duration: the model picks the length itself instead of a fixed number.
`generate_audio`可选	`boolean`	`true`	—	Request synchronised output audio.
`enable_web_search`可选	`boolean`	`false`	—	Let the model search the web for information related to the prompt before rendering. Requests with it on are billed at the web-search rate.
`seed`可选	`integer`	—	0 到 2147483647	Random seed. Omit to let the model pick one.
`return_last_frame`可选	`boolean`	`false`	—	Also return the clip’s final frame as a separate image.
`bitrate_mode`可选	`string`	`standard`	standard, high	Encoding bitrate of the delivered file: standard, or high for crisper detail and a larger file.
`watermark`可选	`boolean`	`false`	—	Add the model’s visible "AI generated" watermark to the video.

请求示例

这段请求原样就能运行，没写的字段都用默认值。运行前先把密钥放进环境变量 POPNOW_API_KEY。

POST /api/v1/jobs/createTask

curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask" \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "model": "bytedance/seedance-2.0-fast/text-to-video",
  "input": {
    "prompt": "A paper boat drifts down a rain-soaked street at dusk, neon signs reflecting in the water, slow tracking shot at ground level",
    "enable_web_search": false,
    "generate_audio": true,
    "duration_seconds": 5,
    "resolution": "720p"
  }
}'

响应里会立刻带回 taskId。之后用 GET /api/v1/jobs/recordInfo 取结果，或者在请求里加上 callBackUrl 等通知。

GET /api/v1/jobs/recordInfo

curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

图生视频

bytedance/seedance-2.0-fast/image-to-video

价格

选项	积分 (每秒成片)	美元
`generate_audio = false, resolution = 480p`	6.75	$0.0675
`generate_audio = true, resolution = 480p`	6.75	$0.0675
`generate_audio = false, resolution = 720p`	14.52	$0.1452
`generate_audio = true, resolution = 720p`	14.52	$0.1452

参数

字段	类型	默认值	取值范围	作用
`image_url`必填	`string`	—	—	A source image that you are authorised to process.
`prompt`可选	`string`	—	—	Describe the intended subject, action, camera, light, sound, and constraints.
`last_image_url`可选	`string`	—	—	Optional closing image for the chosen video workflow.
`aspect_ratio`可选	`string`	`adaptive`	16:9, 9:16, 4:3, 3:4, 1:1, 21:9, adaptive	Output frame ratio.
`resolution`可选	`string`	`720p`	480p, 720p	Output resolution.
`duration_seconds`可选	`integer`	`5`	-1, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15	Requested output duration in seconds. Pass -1 for smart duration: the model picks the length itself instead of a fixed number.
`generate_audio`可选	`boolean`	`true`	—	Request synchronised output audio.
`seed`可选	`integer`	—	0 到 2147483647	Random seed. Omit to let the model pick one.
`return_last_frame`可选	`boolean`	`false`	—	Also return the clip’s final frame as a separate image.
`bitrate_mode`可选	`string`	`standard`	standard, high	Encoding bitrate of the delivered file: standard, or high for crisper detail and a larger file.
`watermark`可选	`boolean`	`false`	—	Add the model’s visible "AI generated" watermark to the video.

请求示例

这段请求原样就能运行，没写的字段都用默认值。运行前先把密钥放进环境变量 POPNOW_API_KEY。

示例里的 image_url 用的是 PopNow 的示例素材，换成你自己的公开 HTTPS 链接、上传文件或已保存的素材即可。

POST /api/v1/jobs/createTask

curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask" \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "model": "bytedance/seedance-2.0-fast/image-to-video",
  "input": {
    "prompt": "He lands softly on the rooftop, laughs and turns toward the camera while the balloons sway in the evening breeze; slow push-in",
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "generate_audio": true,
    "duration_seconds": 5,
    "resolution": "720p"
  }
}'

响应里会立刻带回 taskId。之后用 GET /api/v1/jobs/recordInfo 取结果，或者在请求里加上 callBackUrl 等通知。

GET /api/v1/jobs/recordInfo

curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

参考生视频

bytedance/seedance-2.0-fast/reference-to-video

价格

选项	积分 (每秒成片)	美元
`generate_audio = false, resolution = 480p, with_video = true`	3.38	$0.0338
`generate_audio = true, resolution = 480p, with_video = true`	3.38	$0.0338
`generate_audio = false, resolution = 480p, with_video = false`	6.75	$0.0675
`generate_audio = true, resolution = 480p, with_video = false`	6.75	$0.0675
`generate_audio = false, resolution = 720p, with_video = true`	7.27	$0.0727
`generate_audio = true, resolution = 720p, with_video = true`	7.27	$0.0727
`generate_audio = false, resolution = 720p, with_video = false`	14.52	$0.1452
`generate_audio = true, resolution = 720p, with_video = false`	14.52	$0.1452

参数

字段	类型	默认值	取值范围	作用
`prompt`必填	`string`	—	—	Describe the intended subject, action, camera, light, sound, and constraints.
`reference_image_urls`可选	`array<string>`	—	最多 9 项	Authorised image references.
`reference_video_urls`可选	`array<string>`	—	最多 3 项	Authorised video references.
`reference_audio_urls`可选	`array<string>`	—	最多 3 项	Authorised audio references.
`aspect_ratio`可选	`string`	`adaptive`	16:9, 9:16, 4:3, 3:4, 1:1, 21:9, adaptive	Output frame ratio.
`resolution`可选	`string`	`720p`	480p, 720p	Output resolution.
`duration_seconds`可选	`integer`	`5`	-1, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15	Requested output duration in seconds. Pass -1 for smart duration: the model picks the length itself instead of a fixed number.
`generate_audio`可选	`boolean`	`true`	—	Request synchronised output audio.
`seed`可选	`integer`	—	0 到 2147483647	Random seed. Omit to let the model pick one.
`return_last_frame`可选	`boolean`	`false`	—	Also return the clip’s final frame as a separate image.
`bitrate_mode`可选	`string`	`standard`	standard, high	Encoding bitrate of the delivered file: standard, or high for crisper detail and a larger file.
`watermark`可选	`boolean`	`false`	—	Add the model’s visible "AI generated" watermark to the video.

请求示例

这段请求原样就能运行，没写的字段都用默认值。运行前先把密钥放进环境变量 POPNOW_API_KEY。

示例里的 reference_image_urls 用的是 PopNow 的示例素材，换成你自己的公开 HTTPS 链接、上传文件或已保存的素材即可。

POST /api/v1/jobs/createTask

curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask" \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "model": "bytedance/seedance-2.0-fast/reference-to-video",
  "input": {
    "prompt": "The man from the reference image jogs across a sunlit rooftop at golden hour and smiles at the camera; smooth tracking shot",
    "reference_image_urls": [
      "https://media.popnow.ai/influencer/examples/ava.webp"
    ],
    "generate_audio": true,
    "duration_seconds": 5,
    "resolution": "720p"
  }
}'

响应里会立刻带回 taskId。之后用 GET /api/v1/jobs/recordInfo 取结果，或者在请求里加上 callBackUrl 等通知。

GET /api/v1/jobs/recordInfo

curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

视频续写

bytedance/seedance-2.0-fast/video-extend

价格

选项	积分 (每秒成片)	美元
`generate_audio = false, resolution = 480p`	6.75	$0.0675
`generate_audio = true, resolution = 480p`	6.75	$0.0675
`generate_audio = false, resolution = 720p`	14.52	$0.1452
`generate_audio = true, resolution = 720p`	14.52	$0.1452

参数

字段	类型	默认值	取值范围	作用
`video_url`必填	`string (uri)`	—	—	The clip to continue: MP4, MOV or WebM, up to 60 seconds. Its last frame opens the new segment, and the result is your clip with the new segment joined on.
`prompt`可选	`string`	—	—	What happens next: the action that follows, the camera move and the sound. Optional.
`last_image_url`可选	`string`	—	—	Optional closing image: the new segment lands on this picture. Leave it out and the model decides how the shot ends.
`resolution`可选	`string`	`720p`	480p, 720p	Resolution of the new segment. Match your source clip.
`duration_seconds`可选	`integer`	`5`	-1, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15	Length of the new segment in seconds. This is the billed quantity; the source clip is added on top and is not billed. Pass -1 for smart duration: the model picks the length itself.
`generate_audio`可选	`boolean`	`true`	—	Generate a native soundtrack for the new segment. The source keeps its own sound either way.
`seed`可选	`integer`	—	0 到 2147483647	Random seed. Omit to let the model pick one.
`bitrate_mode`可选	`string`	`standard`	standard, high	Encoding bitrate of the delivered file: standard, or high for crisper detail and a larger file.
`watermark`可选	`boolean`	`false`	—	Add the model’s visible "AI generated" watermark to the video.

请求示例

这段请求原样就能运行，没写的字段都用默认值。运行前先把密钥放进环境变量 POPNOW_API_KEY。

示例里的 video_url 用的是 PopNow 的示例素材，换成你自己的公开 HTTPS 链接、上传文件或已保存的素材即可。

POST /api/v1/jobs/createTask

curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask" \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "model": "bytedance/seedance-2.0-fast/video-extend",
  "input": {
    "prompt": "The flowers keep opening while the camera slowly pulls back to reveal a sunlit meadow",
    "video_url": "https://media.popnow.ai/effects/flower-bloom-1abd6efb.mp4",
    "generate_audio": true,
    "duration_seconds": 5,
    "resolution": "720p"
  }
}'

响应里会立刻带回 taskId。之后用 GET /api/v1/jobs/recordInfo 取结果，或者在请求里加上 callBackUrl 等通知。

GET /api/v1/jobs/recordInfo

curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

Seedance 2.0 Fast API 调用参考

一览

生成视频

价格

参数

请求示例

图生视频

价格

参数

请求示例

参考生视频

价格

参数

请求示例

视频续写

价格

参数

请求示例

接下来

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