Can I use Seedance in OpenClaw?

Yes. Configure RunAPI as an OpenAI-compatible provider in OpenClaw, then call the text_to_video endpoint with model set to seedance-2.0. The same API key handles both chat and video generation.

How does Seedance per-second billing work?

You are billed based on the actual duration of the generated video and the output resolution you select. A 480p video costs less per second than 1080p. The cost is deducted after the video completes, not when the task is created.

Can I use English prompts for non-Chinese content on Seedance?

Yes. Seedance accepts English prompts and generates multi-language content. It supports both English and Chinese prompt input regardless of the target video content language.

Can Seedance generate video from an image?

Yes. Pass an image URL in the first_frame_image_url parameter along with a text prompt. Seedance uses the image as the opening frame and generates motion from there. You can also set last_frame_image_url to constrain the ending.

How do reference_audio_urls work with Seedance?

Seedance 2.0 can sync generated video motion to an audio track. Pass the audio file URL in reference_audio_urls and the model aligns visual motion to the audio -- useful for music videos or dialogue-driven scenes without a separate audio-to-video step.

OPENCLAW + SEEDANCE

OpenClaw で Seedance を使う。

Seedance 2.0 は 4〜15秒・最大 1080p の動画を生成し、秒単位の課金は約 $0.05/秒から——RunAPI の動画モデルの中で秒あたりのコストが最も低いものです。マルチモーダル参照入力（画像、動画、音声 URL）、最初/最後のフレーム制御、ネイティブ音声同期に対応します。OpenClaw のエージェントはチャットと同じ RunAPI キーとエンドポイントで呼び出します。

API キーを取得ドキュメントを読む

1つの APIキー · テキスト→動画エンドポイント · 秒単位の課金

RunAPI を通じて Seedance 2.0 を使い、製品紹介動画を生成します。

要件：
- RUNAPI_API_KEY から APIキーを読み込む。
- POST https://runapi.ai/api/v1/seedance/text_to_video を呼び出す
- model を "seedance-2.0" に設定する。
- prompt に動画シーンの説明を設定する。
- duration_seconds を希望の尺に設定する（4〜15）。
- 横向き動画には aspect_ratio を "16:9" に設定する。
- タスクは非同期です。返された task_id を status が "completed" になるまでポーリングする。
- 完了したら、レスポンスの output から動画 URL を読み込む。

curl -X POST https://runapi.ai/api/v1/seedance/text_to_video \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.0",
    "prompt": "A ceramic coffee mug rotates slowly on a wooden table, steam rising, warm morning light from a window, cinematic",
    "duration_seconds": 8,
    "aspect_ratio": "16:9",
    "output_resolution": "1080p"
  }'

{
  "task_id": "tsk_abc123",
  "status": "pending",
  "model": "seedance-2.0"
}

curlコマンドをコピーしてテスト seedance

仕組み

OpenClaw で Seedance を使う3ステップ

Configure RunAPI

Set RUNAPI_API_KEY in your environment. If you already configured RunAPI for chat in OpenClaw, the same key works for Seedance video generation — no extra provider setup needed.

export RUNAPI_API_KEY=runapi_xxx

Call Seedance text_to_video

Send a POST to the text_to_video endpoint with model set to seedance-2.0. Include a prompt, duration_seconds (4–15), aspect_ratio, and output_resolution. Optionally attach first_frame_image_url, reference_image_urls, or reference_audio_urls for multimodal control.

POST /api/v1/seedance/text_to_video

Poll for the result

The endpoint returns a task_id immediately. Poll the task status endpoint until the status is completed, then read the output video URL from the response. Billing is per-second based on the generated video duration and resolution.

GET /api/v1/seedance/text_to_video/tsk_abc123

パラメータ

Seedance API パラメータ

パラメータ	型	説明
`model`	`string`	Required. seedance-2.0, seedance-2.0-fast, seedance-1.5-pro, seedance-v1-pro, seedance-v1-lite.
`prompt`	`string`	Required. Text description of the video scene to generate.
`duration_seconds`	`integer`	Video length in seconds. 4–15 for Seedance 2.0, 5 or 10 for v1 variants.
`aspect_ratio`	`string`	Output aspect ratio. Accepted: 1:1, 4:3, 3:4, 16:9, 9:16, 21:9, auto.
`output_resolution`	`string`	Video resolution. Accepted: 480p, 720p, 1080p. Higher resolution costs more per second.
`first_frame_image_url`	`string`	Optional. URL of an image to use as the first frame. Enables image-to-video workflows.
`last_frame_image_url`	`string`	Optional. URL of an image to use as the last frame. Constrains the ending scene.
`reference_image_urls`	`array`	Optional. URLs of reference images for pose, depth, or edge guidance.
`reference_audio_urls`	`array`	Optional. URLs of reference audio files for native audio sync in the generated video.
`reference_video_urls`	`array`	Optional. URLs of reference videos for motion or style transfer.
`callback_url`	`string`	Optional. Webhook URL that receives a POST when the task completes.

OpenClaw上のSeedanceとは？

ByteDanceのSeedance 2.0はネイティブ音声統合と正確な音声・動画同期を備えたリーダーボードトップの動画モデルです。4〜15秒・最大1080pの動画をマルチショットストーリーテリング・ディレクタークラスのシーントランジション制御・実際に機能するリップシンクで生成します。OpenClaw agentはRunAPI経由で秒単位の課金で呼び出します。