image-to-videoSAFE

An agent skill published by gencraft-labs.

The instruction file, verbatim from the audited commit — this is the text the model reads, and the surface the audit's instruction layer examines. Quoted here so you can judge it without cloning anything.

---
name: image-to-video
displayName: "Image-to-Video — Pro Pack on RunComfy"
description: >
  Animate any still image on RunComfy — this skill is a smart router
  that matches the user's intent to the right i2v model in the
  RunComfy catalog. Picks HappyHorse 1.0 I2V (Arena #1, native audio,
  identity preservation) for general animations, Wan 2.7 with
  `audio_url` for custom-voiceover lip-sync, or Seedance 2.0 Pro for
  multi-modal animation from image + reference video + reference
  audio. Bundles each model's documented prompting patterns so the
  caller gets sharper output without burning iterations on the wrong
  model. Calls `runcomfy run <vendor>/<model>/image-to-video` (or
  endpoint variant) through the local RunComfy CLI. Triggers on
  "image to video", "image-to-video", "i2v", "animate image", "make
  this move", or any explicit ask to turn a still into video.
homepage: https://www.runcomfy.com
license: MIT
---

# Image-to-Video — Pro Pack on RunComfy

[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=image-to-video) · [HappyHorse I2V](https://www.runcomfy.com/models/happyhorse/happyhorse-1-0/image-to-video?utm_source=skills.sh&utm_medium=skill&utm_campaign=image-to-video) · [Wan 2.7](https://www.runcomfy.com/models/wan-ai/wan-2-7/text-to-video?utm_source=skills.sh&utm_medium=skill&utm_campaign=image-to-video) · [Seedance 2.0 Pro](https://www.runcomfy.com/models/bytedance/seedance-v2/pro?utm_source=skills.sh&utm_medium=skill&utm_campaign=image-to-video) · [GitHub](https://github.com/agentspace-so/runcomfy-skills/tree/main/image-to-video)

**Image-to-video, intent-routed.** This skill doesn't lock you to one model — it picks the right i2v model in the RunComfy catalog based on what the user actually wants: portrait animation, custom-voiceover lip-sync, or multi-modal composition.

```bash
npx skills add agentspace-so/runcomfy-skills --skill image-to-video -g
```

## Pick the right model for the user's intent

| User intent | Model | Why |
|---|---|---|
| Animate a portrait — keep identity stable | **HappyHorse 1.0 I2V** | #1 on Artificial Analysis Arena (Elo 1392); strong facial fidelity |
| Product reveal / 360 / macro motion | **HappyHorse 1.0 I2V** | Geometry preservation + smooth camera moves |
| Native synchronized ambient audio in one pass | **HappyHorse 1.0 I2V** | In-pass audio synthesis |
| Animate **and** lip-sync to a **custom voiceover track** | **Wan 2.7 + `audio_url`** | Accepts your own MP3/WAV (3–30s, ≤15MB) and drives lip-sync to it |
| Multi-language dub variants (same image, different audio per call) | **Wan 2.7 + `audio_url`** | Same shot, swap `audio_url` per language |
| Multi-modal — image + reference video + reference audio together | **Seedance 2.0 Pro** | Up to 9 image refs, 3 video refs (2–15s each), 3 audio refs |
| Brand-consistent narrative with character ref + scene ref + voice ref | **Seedance 2.0 Pro** | Image holds identity, video holds scene, audio holds voice |
| Default if unspecified | **HappyHorse 1.0 I2V** | Best all-round quality + native audio |

The agent reads this table, classifies the user's intent, and picks the matching subsection below.

## 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>`.
4. **A source image URL** — JPEG/PNG/WebP, min 300px, ≤10MB; aspect 1:2.5 to 2.5:1 (HappyHorse) — other models have similar specs.

---

## Route 1: HappyHorse 1.0 I2V — default for portrait / product / general animation

**Model**: `happyhorse/happyhorse-1-0/image-to-video` · **Arena rank**: #1 (Elo 1392)

### Schema

| Field | Type | Required | Default | Notes |
|---|---|---|---|---|
| `image_url` | string | yes | — | JPEG/JPG/PNG/WEBP. Min 300px. Aspect 1:2.5–2.5:1. ≤10MB. |
| `prompt` | string | yes | — | ≤5000 non-CJK or 2500 CJK chars. **Motion / camera / lighting** description. |
| `resolution` | enum | no | `1080P` | `720P` or `1080P`. |
| `duration` | int | no | 5 | 3–15 seconds. |
| `seed` | int | no | 0 | Reuse for variant comparisons. |
| `watermark` | bool | no | true | Provider watermark toggle. |

Output aspect = input aspect. No independent reframing.

### Invoke

```bash
runcomfy run happyhorse/happyhorse-1-0/image-to-video \
  --input '{
    "image_url": "https://.../portrait.jpg",
    "prompt": "Gentle camera drift around the subject'\''s face, subtle breathing motion, identity-stable features, soft natural light."
  }' \
  --output-dir <absolute/path>
```

### Prompting tips

- **Lead with motion verbs**: "drift", "dolly in", "orbit", "tilt up", "reveal", "blink", "breathe". Front-load what's MOVING.
- **Don't restate the image** — the model sees it. Focus tokens on what changes.
- **Preservation goals explicit**: "identity-stable features", "packaging unchanged", "background geometry stable".
- **Lighting evolution**: "rim light intensifying", "shadows shortening as camera rises".
- **One beat per clip** — single primary motion (orbit OR dolly OR tilt OR character action).

---

## Route 2: Wan 2.7 + `audio_url` — when the user has a custom voiceover

**Model**: `wan-ai/wan-2-7/text-to-video` (NOT `/image-to-video` — Wan 2.7's t2v endpoint accepts an `audio_url` that drives lip-sync)

**Note on i2v with Wan 2.7**: Wan 2.7's primary i2v animation isn't on a dedicated endpoint here. For pure i2v (image animated by motion prompt only), prefer **HappyHorse i2v**. Use Wan 2.7 specifically when the user has a custom audio track they want lip-synced to a generated talking-head clip.

### Schema (Wan 2.7 t2v with audio)

| Field | Type | Required | Default | Notes |
|---|---|---|---|---|
| `prompt` | string | yes | — | Up to ~5000 chars. Describe the talking-head shot: framing, lighting, motion. |
| `audio_url` | string | yes (for lip-sync) | — | WAV/MP3, 3–30s, ≤15MB. **Drives lip-sync.** |
| `aspect_ratio` | enum | no | `16:9` | `16:9`, `9:16`,

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

What the source does

Filesystem

none-observed

Network

none-observed

Shell

none-observed

Dependencies

pinned

Secrets in source

none-found

Findings (0)

No findings outside the package's declared scope.

Gates applied: no_behavioural_pass.