# Seedance V2

> Genera video corto cinematográfico con ByteDance Seedance 2.0 Pro en RunComfy: referencias multimodales (hasta 9 imágenes, 3 videos, 3 audios), audio sincronizado con lip-sync natural, duración de 4–15s.

Fuente: https://skillsagentes.com/skills/prime-skills/runcomfy-agent-skills/seedance-v2
Markdown: https://skillsagentes.com/skills/prime-skills/runcomfy-agent-skills/seedance-v2.md

Repositorio: https://github.com/prime-skills/runcomfy-agent-skills
Autor: prime-skills
Licencia: MIT
Actualizado: hace 4 meses
Coste de contexto: 145 tok instalada, 2.3k tok al activarse, 2.3k tok con todos los archivos del bundle
Bundle: 1 archivo, 9 KB
Permisos que pide: ninguno declarado

## Instalación

Un skill son archivos markdown: los mismos archivos valen para cualquier agente y lo único que cambia es el directorio de destino, es decir la bandera `--agent`. Añade `-g` para instalarlo en todos los proyectos de la máquina.

```bash
# Claude Code
npx -y skills add prime-skills/runcomfy-agent-skills --skill seedance-v2 --agent claude-code
# Cursor
npx -y skills add prime-skills/runcomfy-agent-skills --skill seedance-v2 --agent cursor
# Codex
npx -y skills add prime-skills/runcomfy-agent-skills --skill seedance-v2 --agent codex
# Gemini CLI
npx -y skills add prime-skills/runcomfy-agent-skills --skill seedance-v2 --agent gemini
# Windsurf
npx -y skills add prime-skills/runcomfy-agent-skills --skill seedance-v2 --agent windsurf
# Cline
npx -y skills add prime-skills/runcomfy-agent-skills --skill seedance-v2 --agent cline
```

## Qué hace

- Genera video corto cinematográfico con ByteDance Seedance 2.0 Pro vía `runcomfy run bytedance/seedance-v2/pro`
- Acepta hasta 9 imágenes, 3 videos y 3 audios como referencias multimodales sincronizadas
- Produce audio en la misma pasada con lip-sync natural y refinamiento de movimiento cinematográfico
- Gestiona duración de 4–15s, resolución hasta 720p y descarga resultados a `--output-dir`

## Cuándo usarla

- El usuario menciona explícitamente 'seedance', 'seedance 2', 'seedance v2', 'seedance pro' o 'bytedance video'
- Se necesita fidelidad a una identidad/escena de referencia con lip-sync nativo
- Se combinan imágenes de personaje + videos de escena + audio de referencia en un solo plano
- Anuncios con vocero/diálogo o narrativas multi-idioma consistentes de marca

## Cuándo no

- Se busca la calidad de video con mejor votación ciega actual → usar HappyHorse 1.0
- Se necesita lip-sync dirigido por una pista de audio propia → usar Wan 2.7 con `audio_url`
- Se requiere edición de movimiento sobre metraje existente → usar Kling Video O1, o iteración ultrarrápida → usar LTX 2

## Qué la activa

- "Genera un video con Seedance 2 de una barista explicando el especial del día con lip-sync"
- "Crea un anuncio de vocero en 9:16 usando esta foto de referencia con Seedance Pro"
- "Combina esta imagen, este video y este audio de referencia con Seedance v2"

## Antes de instalar

- Requiere el RunComfy CLI (`npm i -g @runcomfy/cli`) y una cuenta RunComfy (`runcomfy login` o `RUNCOMFY_TOKEN` en CI/contenedores).
- Necesita en el PATH: npx
- makes network requests

## Archivos

- SKILL.md — 9 KB

## SKILL.md

Reproducido tal cual desde prime-skills/runcomfy-agent-skills bajo MIT. Esta sección es el documento original y está en inglés.

# 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, voice tone matches audio 1.",
    "image_url": ["https://.../subject.jpg"],
    "video_url": ["https://.../cafe-locked-shot.mp4"],
    "audio_url": ["https://.../voice-ref.mp3"]
  }' \
  --output-dir <absolute/path>
```

The CLI submits, polls, fetches the result, downloads `*.runcomfy.net`/`*.runcomfy.com` URLs into `--output-dir`.

## Prompting — what actually works

**Image vs text division.** This is the single most important rule. Stable identity (face, costume, brand mark, logo) → put in `image_url`. Evolving narrative (action, mood, lighting, camera) → put in `prompt`. Trying to verbally describe a face in detail wastes tokens and produces drift.

**Camera + motion in plain language.** "Medium close-up", "slow push-in", "handheld follow", "locked-off wide" all work as directives. Combine: `"Medium close-up. Slow push-in over 3 seconds. Handheld, slight breathing motion."`

**Audio direction with `generate_audio: true`** — say the tone: `"warm friendly conversational"`, `"calm instructional"`, `"crisp newsroom delivery"`. For ambient: `"gentle cafe chatter, distant traffic, no foreground music"`.

**Reference media specs** — videos must be 2–15s; audio must be ≤15MB and 2–15s. Out-of-range files reject. Match aspect ratio of refs to your output to avoid crops.

**Anti-patterns:**
- Mixing radically different aesthetic refs (watercolor + photoreal) → confuses.
- Conflicting style cues in prompt → simplify by removing contradictions.
- Trying to describe stable identity verbally → use `image_url` instead.
- Asking for >15s clips → 422; segment into multiple calls.

## Where it shines

| Use case | Why Seedance 2.0 Pro |
|---|---|
| **Spokesperson / dialogue ads** | Native in-pass lip-sync, no separate TTS step |
| **Brand-consistent multi-language narratives** | Image refs hold identity; text drives translation |
| **Cinematic short-form film previs** | Camera-shot grammar + multi-modal refs |
| **Ad creatives with reference music / VO tone** | Audio refs guide voice / mood without locking lip-sync |
| **Reproducible variant testing** | Seed control + fixed schema |

## Sample prompts (verified to produce strong results)

**Default playground example:**

```
Golden hour on a quiet cafe terrace: a barista wipes the counter, then
looks up and explains today's special in a friendly tone, natural
lip-sync. Medium close-up, slow push-in; warm side light, soft bokeh
through glass, gentle cafe ambience and subtle film grain.
```

**Multi-modal lip-sync (text + image):**

```
Same person as image 1 in a softly-lit recording booth, leaning into
the mic, says: "We just shipped the biggest update of the year."
Calm conversational tone. Medium close-up, locked tripod, shallow DOF,
warm key light from camera-left.
```

## Limitations

- **Duration 4–15s** — no longer clips on this endpoint.
- **Resolution ceiling 720p** on the playground variant.
- **Reference media specs** — videos / audio must be 2–15s; audio < 15MB.
- **Lip-sync quality** — depends on prompt clarity; not guaranteed perfect under all conditions.
- **No `@`-syntax for character binding** — relies on image refs + prompt alignment.

## Exit codes

| code | meaning |
|---|---|
| 0  | success |
| 64 | bad CLI args |
| 65 | bad input JSON / schema mismatch |
| 69 | upstream 5xx |
| 75 | retryable: timeout / 429 |
| 77 | not signed in or token rejected |

Full reference: [docs.runcomfy.com/cli/troubleshooting](https://docs.runcomfy.com/cli/troubleshooting?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-v2).

## How it works

The skill invokes `runcomfy run bytedance/seedance-v2/pro` with a JSON body matching the schema. The CLI POSTs to `https://model-api.runcomfy.net/v1/models/bytedance/seedance-v2/pro`, polls the request, fetches the result, and downloads any `.runcomfy.net`/`.runcomfy.com` URL into `--output-dir`. `Ctrl-C` cancels the remote request before exit.

## Security & Privacy

- **Token storage**: `runcomfy login` writes the API token to `~/.config/runcomfy/token.json` with mode 0600 (owner-only read/write). Set `RUNCOMFY_TOKEN` env var to bypass the file entirely in CI / containers.
- **Input boundary**: the user prompt is passed as a JSON string to the CLI via `--input`. The CLI does NOT shell-expand the prompt; it transmits the JSON body directly to the Model API over HTTPS. No shell injection surface from prompt content.
- **Third-party content**: image / mask / video URLs you pass are fetched by the RunComfy model server, not by the CLI on your machine. Treat external URLs as untrusted; image-based prompt injection is a known risk for any image-edit / video-edit model.
- **Outbound endpoints**: only `model-api.runcomfy.net` (request submission) and `*.runcomfy.net` / `*.runcomfy.com` (download whitelist for generated outputs). No telemetry, no callbacks.
- **Generated-file size cap**: the CLI aborts any single download > 2 GiB to prevent disk-fill from a malicious or runaway model output.

## Dónde encaja

- Categoría: [Vídeo y animación](https://skillsagentes.com/categorias/video.md) — Skills que generan, editan y animan vídeo: guion y storyboard, render, subtítulos y doblaje, y los modelos que lo producen.
- Creador: [prime-skills](https://skillsagentes.com/creators/prime-skills.md) — 30 skills en el directorio
- [Todas las skills](https://skillsagentes.com/skills.md)
- [Ranking de instalaciones](https://skillsagentes.com/ranking.md)

## Otras skills del mismo repositorio

- [Ai Music](https://skillsagentes.com/skills/prime-skills/runcomfy-agent-skills/ai-music.md): Genera música con IA en RunComfy mediante la CLI `runcomfy`, enrutando entre ElevenLabs AI Music Generation (voz premium 44.1 kHz) y ACE Step / ACE Step 1.5 (código abierto, mucho más barato), más inpaint y outpaint de audio.
- [Ace Step](https://skillsagentes.com/skills/prime-skills/runcomfy-agent-skills/ace-step.md): Genera, inpaint y outpaint música con ACE Step de StepFun-AI en RunComfy vía la CLI `runcomfy`: composición por tags, letras multilingües, hasta 4 min, desde $0.0002/s.
- [Image Outpainting](https://skillsagentes.com/skills/prime-skills/runcomfy-agent-skills/image-outpainting.md): Outpainting de imágenes en RunComfy vía el CLI `runcomfy`: extiende el lienzo, cambia el aspect ratio y rellena lo que la cámara no captó, preservando el contenido original.
- [Video Outpainting](https://skillsagentes.com/skills/prime-skills/runcomfy-agent-skills/video-outpainting.md): Outpainting de video vía el CLI `runcomfy`: extiende el lienzo espacial, cambia la relación de aspecto (9:16 a 16:9 o viceversa) preservando la acción central, usando Wan 2-7 edit-video o flujos ComfyUI dedicados.
- [Video Extend](https://skillsagentes.com/skills/prime-skills/runcomfy-agent-skills/video-extend.md): Extiende o continúa un clip de video existente en RunComfy vía la CLI runcomfy, usando los endpoints extend-video y fast/extend-video de Google Veo 3-1.

## Skills relacionadas

- [Seedance 2 5](https://skillsagentes.com/skills/calesthio/openmontage/seedance-2-5.md): Genera vídeo cinematográfico de 4-30 s con ByteDance Seedance 2.5 por fal.ai, Volcengine Ark, Runway o ComfyUI. Cubre el contrato de prompt 2.5, cortes duros, locks de continuidad y voz.
- [Hyperframes Cli](https://skillsagentes.com/skills/calesthio/openmontage/hyperframes-cli.md): Bucle de desarrollo del CLI de HyperFrames: init, add, preview, render, publish, doctor y demás comandos, más el renderizado en la nube con AWS Lambda.
- [Avatar Video](https://skillsagentes.com/skills/calesthio/openmontage/avatar-video.md): Crea vídeos de avatar con IA controlando avatar, voz, guion, escenas y fondos mediante la API v2 de HeyGen, incluido WebM transparente e integración con Remotion.
- [Remotion To Hyperframes](https://skillsagentes.com/skills/calesthio/openmontage/remotion-to-hyperframes.md): Porta una composición de Remotion (React) a HTML de HyperFrames. Úsalo solo cuando el usuario pida explícitamente portar, convertir o migrar una fuente de Remotion.
- [Remotion](https://skillsagentes.com/skills/calesthio/openmontage/remotion.md): Patrones de Remotion propios del toolkit: transiciones a medida, componentes compartidos y convenciones de proyecto. Para el framework en sí, mira el skill remotion-official.

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