wan-2-7

Wan 2.7 — Pro Pack on RunComfy

runcomfy.com · Text-to-video · GitHub

Wan-AI's Wan 2.7 — flagship video model with multi-reference conditioning and audio-driven lip-sync — hosted on the RunComfy Model API.

npx skills add agentspace-so/runcomfy-skills --skill wan-2-7 -g

When to pick this model (vs siblings)

| You want | Use | |---|---| | Lip-sync video to an audio track you supply | Wan 2.7 (audio_url) | | Multi-reference fine motion control | Wan 2.7 | | Smooth transitions, accurate motion physics | Wan 2.7 | | Currently-#1 blind-vote video model | HappyHorse 1.0 | | Multi-modal cinematic with image+video+audio refs + in-pass voice generation | Seedance 2.0 Pro | | Cinematic motion editing on existing footage | Kling Video O1 | | Ultra-fast iteration | LTX 2 |

If the user said "Wan" / "Wan 2.7" / "wan-ai" / "alibaba 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

wan-ai/wan-2-7/text-to-video

| Field | Type | Required | Default | Notes | |---|---|---|---|---| | prompt | string | yes | — | Up to ~5000 chars / ~1500 tokens. | | audio_url | string | no | — | WAV/MP3, 3–30s, ≤15MB. Drives lip-sync. Omit → background music auto-generated. | | aspect_ratio | enum | no | 16:9 | 16:9, 9:16, 1:1, 4:3, 3:4. | | resolution | enum | no | 1080p | 720p or 1080p. | | duration | enum | no | 5 | 2–15 (whole seconds). | | negative_prompt | string | no | — | Up to 500 chars. Concrete issues to avoid. | | enable_prompt_expansion | bool | no | true | Auto-rewrites short prompts. Disable for literal control. | | seed | int | no | — | 0..2^31-1. Reuse for variants. |

How to invoke

Default (5s 1080p 16:9, prompt-expanded):

runcomfy run wan-ai/wan-2-7/text-to-video \
  --input '{"prompt": "<user prompt>"}' \
  --output-dir <absolute/path>

Audio-driven lip-sync (your own track):

runcomfy run wan-ai/wan-2-7/text-to-video \
  --input '{
    "prompt": "Medium close-up of the spokesperson, warm key light, locked tripod, slight breathing motion.",
    "audio_url": "https://.../voiceover.mp3",
    "duration": 12,
    "aspect_ratio": "9:16"
  }' \
  --output-dir <absolute/path>

Literal control (no auto-expansion):

runcomfy run wan-ai/wan-2-7/text-to-video \
  --input '{
    "prompt": "<exactly what you want, verbatim>",
    "enable_prompt_expansion": false,
    "negative_prompt": "no subtitles, no flicker, no distorted hands"
  }' \
  --output-dir <absolute/path>

Prompting — what actually works

Camera + motion in plain English. "Slow dolly in", "locked tripod, low angle", "handheld follow", "crane move from above". Front-load the shot.

One primary action per clip. Don't pile up multiple competing actions. Pick the beat: "she turns, then smiles" not "she turns AND smiles AND a bus passes AND...".

Use negative_prompt for concrete issues. Good: "no subtitles, no watermark, no flicker". Bad (vague): "no bad lighting".

Prompt expansion is on by default. Short prompts get auto-rewritten by the model. For terse / literal prompts (e.g. brand-strict ad copy), disable with enable_prompt_expansion: false.

Audio specs matter. audio_url must be 3–30s, ≤15MB, WAV/MP3. Out-of-range files reject. Match audio length to clip duration.

Iterate seeds. Reuse the same seed when you want consistent output across variants of the same prompt. Change seed for genuine variety.

Anti-patterns:

• Static-frame descriptions → motion will be vague.
• Vague negatives ("no bad colors") → ignored.
• Audio outside the 3–30s / 15MB / WAV-MP3 spec → rejected.
• Prompts > 5000 chars / 1500 tokens → degraded output.

Where it shines

| Use case | Why Wan 2.7 | |---|---| | Lip-synced ads with custom voiceover | audio_url accepts your track | | Multi-language dub variants | Same prompt, different audio_url per language | | Multi-reference motion control | Up to 5 reference media (image / video / voice) | | Smooth transitions + motion physics | Strong physics-aware motion priors | | Negative-prompted clean output | Targeted issue exclusion |

Sample prompts (verified to produce strong results)

Page example (product showcase):

Cinematic medium shot of a product on a marble surface, soft studio
lighting, slow subtle camera push-in, shallow depth of field, premium
commercial look, crisp 1080p detail

Lip-synced spokesperson (with audio_url):

Medium close-up of a confident spokesperson in a softly-lit recording
booth, leaning slightly toward the camera, locked tripod, shallow depth
of field, warm key light from camera-left.

Vertical platform-native:

9:16 vertical short. A barista pulls a single espresso shot, steam
rising into morning sun, rich crema slowly forming. Close-up handheld,
shallow DOF, warm cafe ambience.

Limitations

• Duration cap 15s. For longer narratives, stitch multiple calls.
• No native 4K — 1080p ceiling.
• Aspect ratios — only the 5 documented values.
• Audio specs — 3–30s, ≤15MB, WAV/MP3 only.
• Reference media cap 5 (image + video + voice combined).
• For in-pass voice generation (no separate audio track), use Seedance 2.0 Pro — Wan accepts audio rather than generating it.

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.

How it works

The skill invokes runcomfy run wan-ai/wan-2-7/text-to-video with a JSON body matching the schema. The CLI POSTs to https://model-api.runcomfy.net/v1/models/wan-ai/wan-2-7/text-to-video, 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.