Seedance Video

Generate and edit AI videos with Seedance via AceDataCloud API. Use for text/image video, Seedance 2.x multimodal image/audio/video reference, Seedance 2.5 pure-audio reference, edit, extend, and up to 30-second output. Supports multiple models, up to 4k, aspect ratio, and optional audio generation.

Seedance Video Generation

Generate AI dance and motion videos through AceDataCloud's Seedance (ByteDance) API.

First-time setup

1. Install the official Skill with clawhub install @acedatacloud/seedance. Check that the ClawHub publisher is @acedatacloud.
2. Sign in at AceDataCloud → Applications, open General application, and check Seedance access, balance, and current pricing. Copy its API key, or select Manage Keys → Create for a separate key. Copy the key value without Bearer ; a platform-... management token is not a service API key.
3. If you enable Allowed APIs restrictions, include /seedance/videos and /seedance/tasks. Advanced workflows below may call additional routes.
4. On the OpenClaw Gateway host, put ACEDATACLOUD_API_TOKEN=your_api_key_here in ~/.openclaw/.env, then restart the Gateway and start a new session. For a direct terminal test, run export ACEDATACLOUD_API_TOKEN="your_api_key_here" in that shell. Never put the key in a prompt or commit an .env file.
5. Run the Quick Start below. If this workflow returns a task ID, query that same task until it finishes; do not submit the same billable request again just to check progress.

Illustrated key setup, first run, and troubleshooting · Token details

Quick Start

bash

curl -X POST https://api.acedata.cloud/seedance/videos \
  -H "Authorization: Bearer $ACEDATACLOUD_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"model": "doubao-seedance-2-0-260128", "content": [{"type": "text", "text": "a dancer performing contemporary ballet in a misty forest"}], "async": true}'

Async: See async task polling. Poll via POST /seedance/tasks with {"id": "..."}. This returns a task ID immediately. Poll for the result:

bash

curl -X POST https://api.acedata.cloud/seedance/tasks \
  -H "Authorization: Bearer $ACEDATACLOUD_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"id": "<task_id from above>"}'

Models

Seedance 2.5 (latest flagship)

Model	Best For	Limits
doubao-seedance-2-5-260628	Up to 30 seconds, pure-audio or multimodal reference, video edit/extend	480p, 720p, 1080p; 30 images / 10 videos / 10 audios / 50 total

Use omni_reference_task_type: "auto", "edit", or "extend". Edit and extend require reference_video and ratio: "adaptive"; edit also requires duration: -1. Optional output_format is mp4 or mov.

Seedance 2.0 (multimodal reference, up to 4k)

The 2.0 series adds multimodal reference inputs: real-person / character image references, reference audio, and reference video (see the workflows below).

Model	Best For	Max resolution
doubao-seedance-2-0-260128	Highest quality, real-person/character reference, 4k output	4k
doubao-seedance-2-0-fast-260128	Faster 2.0 generation	720p
doubao-seedance-2-0-mini-260615	Lightweight / most cost-effective 2.0	720p

Seedance 1.x

Model	Type	Best For
doubao-seedance-1-5-pro-251215	Text+Image-to-Video	1.5 flagship, audio support
doubao-seedance-1-0-pro-250528	Text+Image-to-Video	General-purpose, reliable quality
doubao-seedance-1-0-pro-fast-251015	Text+Image-to-Video	Faster Pro generation
doubao-seedance-1-0-lite-t2v-250428	Text-to-Video only	Lightweight text-to-video
doubao-seedance-1-0-lite-i2v-250428	Image-to-Video only	Lightweight image-to-video

Workflows

1. Text-to-Video

Pass a text content item in the content array.

json

POST /seedance/videos
{
  "model": "doubao-seedance-1-0-pro-250528",
  "content": [
    {"type": "text", "text": "a street dancer doing breakdancing moves in an urban setting"}
  ],
  "resolution": "1080p",
  "ratio": "16:9",
  "duration": 5
}

2. Image-to-Video

Include an image content item (with an optional role) alongside the text.

json

POST /seedance/videos
{
  "model": "doubao-seedance-1-5-pro-251215",
  "content": [
    {"type": "text", "text": "the person starts dancing gracefully"},
    {
      "type": "image_url",
      "role": "first_frame",
      "image_url": {"url": "https://example.com/dancer.jpg"}
    }
  ],
  "resolution": "720p",
  "duration": 5
}

Image roles:

• first_frame — image is used as the opening frame
• last_frame — image is used as the closing frame
• reference_image — image is used as a style / subject / real-person reference (Seedance 2.0 keeps the referenced person or character consistent)

Reference media (Seedance 2.x):

• audio_url — use role: "reference_audio"
• video_url — use role: "reference_video"
• 2.5 accepts pure-audio reference; 2.0 requires an image or video alongside audio

3. First-frame + Last-frame

Provide both a start and end frame image:

json

POST /seedance/videos
{
  "model": "doubao-seedance-2-0-260128",
  "content": [
    {"type": "text", "text": "smooth transition between two scenes"},
    {"type": "image_url", "role": "first_frame", "image_url": {"url": "https://example.com/start.jpg"}},
    {"type": "image_url", "role": "last_frame", "image_url": {"url": "https://example.com/end.jpg"}}
  ]
}

4. Real-person / character reference (Seedance 2.0)

Seedance 2.0 models (doubao-seedance-2-0-260128, doubao-seedance-2-0-fast-260128, doubao-seedance-2-0-mini-260615) can keep a specific person or character consistent across a brand-new scene. Pass one or more photos as image_url items with role: "reference_image" — the model preserves that subject's appearance. Up to 9 reference images are accepted.

json

POST /seedance/videos
{
  "model": "doubao-seedance-2-0-260128",
  "content": [
    {"type": "text", "text": "the same person walking through a neon-lit night market, cinematic"},
    {"type": "image_url", "role": "reference_image", "image_url": {"url": "https://example.com/person.jpg"}}
  ],
  "resolution": "1080p",
  "duration": 8
}

5. Reference audio / video (Seedance 2.0)

2.0 models also accept reference audio (voice timbre, background music) and reference video (subject content, camera movement, motion, overall style). Add audio_url and/or video_url content items. Limits: up to 3 audio and 3 video references per request.

json

POST /seedance/videos
{
  "model": "doubao-seedance-2-0-260128",
  "content": [
    {"type": "text", "text": "a singer performing on stage, matching the reference voice and motion"},
    {"type": "image_url", "role": "reference_image", "image_url": {"url": "https://example.com/person.jpg"}},
    {"type": "audio_url", "role": "reference_audio", "audio_url": {"url": "https://example.com/voice.mp3"}},
    {"type": "video_url", "role": "reference_video", "video_url": {"url": "https://example.com/motion.mp4"}}
  ],
  "generate_audio": true
}

Parameters

Parameter	Values	Description
model	see Models table	Model to use (required)
content	array	Input items: text, image_url, audio_url (2.0), video_url (2.0) (required)
resolution	"480p", "720p", "1080p", "4k"	Output resolution. 4k is doubao-seedance-2-0-260128 (standard) only; 2-0-fast / 2-0-mini max out at 720p (default: 720p for pro/2.0, 480p for lite)
ratio	"16:9", "4:3", "1:1", "3:4", "9:16", "21:9", "adaptive"	Aspect ratio (default: 16:9)
duration	2 – 30, or -1	1.0: 2–12 (no auto); 1.5 Pro: 4–12/-1; 2.0: 4–15/-1; 2.5: 4–30/-1
frames	29–289 (must satisfy 25+4n)	Frame count — mutually exclusive with duration
seed	-1 to 4294967295	Seed for reproducible results (-1 = random)
generate_audio	true / false	Generate audio (supported by doubao-seedance-1-5-pro-251215 and the doubao-seedance-2-0 series; other models ignore it)
camerafixed	true / false	Fix the camera position during generation
watermark	true / false	Add a watermark to the generated video
return_last_frame	true / false	Return the last frame of the generated video
omni_reference_task_type	auto, edit, extend	Seedance 2.5 task type
output_format	mp4, mov	Seedance 2.5 output format
tools	object[]	Seedance 2.5 web search tool, e.g. [{"type":"web_search"}]
priority	0–9	Seedance 2.5 queue priority
safety_identifier	string	Stable anonymous end-user ID (max 64 chars; do not send PII)
execution_expires_after	number	Task timeout threshold in seconds

Inline Parameter Syntax

You can also embed generation parameters directly in the text prompt using the --param value syntax:

text

A kitten yawning at the camera. --rs 720p --rt 16:9 --dur 5 --fps 24 --seed 42

Supported inline params: --rs (resolution), --rt (ratio), --dur (duration), --frames, --fps (24 only), --seed, --cf (camera_fixed), --wm (watermark).

Gotchas

• Model names use the doubao-* convention (e.g. doubao-seedance-1-0-pro-250528) — old short names like seedance-1.0 are not valid
• The content array replaces the old prompt + image_url fields; always use content
• Image and text scenarios are mutually exclusive per content item — each item has either text or image_url, not both
• first_frame and last_frame may be combined in one request, but reference_image is mutually exclusive with first_frame / last_frame — do not mix a reference image with first/last frames
• generate_audio: true is supported by doubao-seedance-1-5-pro-251215 and the doubao-seedance-2-0 series; other models ignore this field
• Lite models are split: *-lite-t2v-* only accepts text, *-lite-i2v-* only accepts image-to-video
• audio_url and video_url reference items are supported by Seedance 2.0 and 2.5; 2.5 also supports pure-audio reference
• Resolution options are 480p, 720p, 1080p, and 4k (4k is doubao-seedance-2-0-260128 only; 2-0-fast / 2-0-mini max out at 720p) — there is no 360p or 540p
• Duration is model-specific: 1.0 supports 2–12; 1.5 Pro supports 4–12/-1; 2.0 supports 4–15/-1; 2.5 supports 4–30/-1
• Task states use "succeeded" (not "completed") — check for this value when polling

MCP: pip install mcp-seedance | Hosted: https://seedance.mcp.acedata.cloud/mcp | See all MCP servers