Use Seedance in OpenClaw.
Seedance 2.0 generates 4–15 second videos at up to 1080p with per-second billing starting around $0.05/sec — the lowest per-second cost among RunAPI video models. It supports multimodal reference inputs (images, video, and audio URLs), first/last frame control, and native audio sync. OpenClaw agents call it through the same RunAPI key and endpoint used for chat.
Generate a product showcase video using Seedance 2.0 through RunAPI.
Requirements:
- Read the API key from RUNAPI_API_KEY.
- Call POST https://runapi.ai/api/v1/seedance/text_to_video
- Set model to "seedance-2.0".
- Set prompt to describe the video scene.
- Set duration_seconds to the desired length (4–15).
- Set aspect_ratio to "16:9" for landscape video.
- The task is async. Poll the returned task_id until status is "completed".
- When done, read the video URL from the response output.
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"
}
Use Seedance in OpenClaw in three steps
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
Seedance API parameters
| Parameter | Type | Description |
|---|---|---|
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. |
What is Seedance on OpenClaw?
Seedance 2.0 by ByteDance is a leaderboard-topping video model with native audio integration and tight audio-video sync. It generates 4 to 15 second clips at up to 1080p with multi-shot storytelling, director-level control over scene transitions, and actual lip-sync that works. OpenClaw agents call it through RunAPI with per-second billing.
Seedance use cases
Dialogue-heavy shorts
Generate short clips with characters speaking -- Seedance handles lip sync and dialogue attribution across multiple speakers, making it a fit for conversational content and talking-head scenes.
Short-form content for TikTok and Reels
Produce platform-ready vertical video at exact durations. Per-second billing means a 5-second clip costs a third of a 15-second one.
Product demonstration prototypes
Create product demo clips with audio narration synced to visual action. Pass reference audio to align the video motion to a voiceover track.
Seedance + OpenClaw questions
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.
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.
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.
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.
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 general setup
Not configured yet? Start with the RunAPI setup guide for OpenClaw.
OpenClaw setup guide →Try Seedance in OpenClaw today.
Get a free RunAPI key, paste the prompt into OpenClaw, and generate per-second-billed video with Seedance 2.0.