Seedance V2

# Seedance 2.0 Pro — Pro Pack on RunComfy

[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-v2) · [Seedance 2.0 Pro](https://www.runcomfy.com/models/bytedance/seedance-v2/pro?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-v2) · [GitHub](https://github.com/agentspace-so/runcomfy-skills/tree/main/seedance-v2)

ByteDance **Seedance 2.0 Pro** — multimodal cinematic video generator with native lip-synced audio — hosted on the **RunComfy Model API**.

```bash
npx skills add agentspace-so/runcomfy-skills --skill seedance-v2 -g
```

## When to pick this model (vs siblings)

Seedance 2.0 Pro's distinct strength is **multi-modal cinematic short-form**: combine character images + scene videos + reference audio into one coherent shot. Pick it when **fidelity to a reference identity / scene matters and you want native lip-sync**.

| You want | Use |
|---|---|
| Lip-synced spokesperson / dialogue ad | **Seedance 2.0 Pro** |
| Multi-modal references (image + video + audio) | **Seedance 2.0 Pro** |
| Brand-consistent multi-language narrative | **Seedance 2.0 Pro** |
| Currently-#1 blind-vote video quality | HappyHorse 1.0 |
| Audio-driven lip-sync from your own track | Wan 2.7 (`audio_url`) |
| Motion editing on existing footage | Kling Video O1 |
| Ultra-fast iteration | LTX 2 |

If the user said "Seedance" / "Seedance 2" / "ByteDance video" explicitly, route here regardless.

## Prerequisites

1. **RunComfy CLI** — `npm i -g @runcomfy/cli`
2. **RunComfy account** — `runcomfy login` opens a browser device-code flow.
3. **CI / containers** — set `RUNCOMFY_TOKEN=<token>` instead of `runcomfy login`.

## Endpoints + input schema

### `bytedance/seedance-v2/pro`

| Field | Type | Required | Default | Notes |
|---|---|---|---|---|
| `prompt` | string | yes | — | CN ≤ 500 chars OR EN ≤ 1000 words. |
| `image_url` | array | no | `[]` | 0–9 references (JPEG/PNG/WebP/BMP/TIFF/GIF). |
| `video_url` | array | no | `[]` | 0–3 clips (MP4/MOV), 2–15s each. |
| `audio_url` | array | no | `[]` | 0–3 audio refs (WAV/MP3), 2–15s, < 15MB each. |
| `aspect_ratio` | enum | no | `adaptive` | `adaptive`, `16:9`, `9:16`, `4:3`, `3:4`, `1:1`, `21:9`. |
| `duration` | int | no | 5 | 4–15 (whole seconds). |
| `resolution` | enum | no | `720p` | `480p` or `720p`. |
| `generate_audio` | bool | no | true | In-pass synchronized speech / SFX / music. |
| `seed` | int | no | — | Reproducibility. |

## How to invoke

**Default (text only, 5s, 720p with audio):**

```bash
runcomfy run bytedance/seedance-v2/pro \
  --input '{"prompt": "<user prompt>"}' \
  --output-dir <absolute/path>
```

**Lip-synced ad with character reference (image-stable, text-evolves):**

```bash
runcomfy run bytedance/seedance-v2/pro \
  --input '{
    "prompt": "Medium close-up. The woman explains today'\''s special in a warm friendly tone, slow push-in, soft window light, gentle cafe ambience.",
    "image_url": ["https://.../barista-headshot.jpg"],
    "duration": 8,
    "aspect_ratio": "9:16"
  }' \
  --output-dir <absolute/path>
```

**Multi-modal (image + video + audio refs):**

```bash
runcomfy run bytedance/seedance-v2/pro \
  --input '{
    "prompt": "Subject from image 1 walks through the café from video 1