Video models
Seedance 2.0
Seedance 2.0 — high-quality AI video generation.
| modelId | bytedance-seedance-2, bytedance-seedance-2-fast |
| Modality | video |
| Pricing | See this model on the Pricing page for the current per-call price (with your markup). |
Operations
| Operation | modelId | Endpoint | Required input |
|---|---|---|---|
| Seedance 2 | bytedance-seedance-2 | POST /api/v1/generate | — |
| Seedance 2 Fast | bytedance-seedance-2-fast | POST /api/v1/generate | — |
| Poll task | — | GET /api/v1/task/{id}?model=bytedance-seedance-2 | — |
Seedance 2 — bytedance-seedance-2
| Field | Type | Required | Values / example |
|---|---|---|---|
| first_frame_url | string | No | Click to upload or drag and drop images. JPG/PNG/WEBP/BMP/GIF, max 30MB each. (image URL) |
| last_frame_url | string | No | Click to upload or drag and drop images. JPG/PNG/WEBP/BMP/GIF, max 30MB each. (image URL) |
| prompt | string | No | The text prompt or description for the video. Max 20000 characters. (default: Slow cinematic push-in, gentle ambient motion, soft light shifting across the frame, subtle parallax and quiet, atmospheric depth.) |
| reference_image_urls | string[] | No | A list of input image URLs. (image URL) |
| reference_video_urls | string[] | No | A list of input video URLs. Furthermore, the total length of the three videos must not exceed 15 seconds. (image URL) |
| reference_audio_urls | string[] | No | A list of input audio URLs. Furthermore, the total length of the three audios must not exceed 15 seconds. (image URL) |
| generate_audio | boolean | No | Whether to generate AI audio synchronized with the video. (true/false) (default: true) |
| resolution | string | No | The output video resolution. (options: 480p | 720p | 1080p | 4k) (default: 720p) |
| aspect_ratio | string | No | The aspect ratio of the generated video. (options: 16:9 | 4:3 | 1:1 | 3:4 | 9:16 | 21:9) (default: 16:9) |
| duration | number | No | Video duration in seconds. (range 4-15) (default: 15) |
| web_search | boolean | No | Use online search (true/false) (default: false) |
| nsfw_checker | boolean | No | A configurable parameter. Defaults to true in the Playground. (true/false) (default: true) |
bash
curl -X POST https://you.bot/api/v1/generate \
-H "Authorization: Bearer $YOUBOT_API_KEY" \
-H "Content-Type: application/json" \
-d '{"modelId":"bytedance-seedance-2","input":{"first_frame_url":"https://example.com/input.jpg","last_frame_url":"https://example.com/input.jpg","prompt":"A cinematic aerial shot of a coastal town at golden hour, gentle waves rolling onto the shore, warm light, slow camera push-in.","reference_image_urls":["https://example.com/input.jpg"],"reference_video_urls":["https://example.com/input.mp4"],"reference_audio_urls":["https://example.com/input.mp3"],"generate_audio":true,"resolution":"480p","aspect_ratio":"16:9","duration":6,"web_search":false,"nsfw_checker":true}}'Seedance 2 Fast — bytedance-seedance-2-fast
| Field | Type | Required | Values / example |
|---|---|---|---|
| first_frame_url | string | No | Click to upload or drag and drop images. JPG/PNG/WEBP/BMP/GIF, max 30MB each. (image URL) |
| last_frame_url | string | No | Click to upload or drag and drop images. JPG/PNG/WEBP/BMP/GIF, max 30MB each. (image URL) |
| prompt | string | No | The text prompt or description for the video. Max 20000 characters. (default: Animate from the first frame with a gentle push-in as a tall waterfall's mist rises and drifts, faint rainbows shimmering in the spray while ferns tremble and light dapples through the canopy.) |
| reference_image_urls | string[] | No | A list of input image URLs. (image URL) |
| reference_video_urls | string[] | No | A list of input video URLs. Furthermore, the total length of the three videos must not exceed 15 seconds. (image URL) |
| reference_audio_urls | string[] | No | A list of input audio URLs. Furthermore, the total length of the three audios must not exceed 15 seconds. (image URL) |
| generate_audio | boolean | No | Whether to generate AI audio synchronized with the video. (true/false) (default: true) |
| resolution | string | No | The output video resolution. (options: 480p | 720p) (default: 720p) |
| aspect_ratio | string | No | The aspect ratio of the generated video. (options: 16:9 | 4:3 | 1:1 | 3:4 | 9:16 | 21:9) (default: 16:9) |
| duration | number | No | Video duration in seconds. (range 4-15) (default: 15) |
| web_search | boolean | No | Use online search (true/false) (default: false) |
| nsfw_checker | boolean | No | A configurable parameter. Defaults to true in the Playground. (true/false) (default: true) |
bash
curl -X POST https://you.bot/api/v1/generate \
-H "Authorization: Bearer $YOUBOT_API_KEY" \
-H "Content-Type: application/json" \
-d '{"modelId":"bytedance-seedance-2-fast","input":{"first_frame_url":"https://example.com/input.jpg","last_frame_url":"https://example.com/input.jpg","prompt":"A cinematic aerial shot of a coastal town at golden hour, gentle waves rolling onto the shore, warm light, slow camera push-in.","reference_image_urls":["https://example.com/input.jpg"],"reference_video_urls":["https://example.com/input.mp4"],"reference_audio_urls":["https://example.com/input.mp3"],"generate_audio":true,"resolution":"480p","aspect_ratio":"16:9","duration":6,"web_search":false,"nsfw_checker":true}}'