skill-runway-video-gen
v1.0.0Generate short product videos from images using Runway Gen4 Turbo. Use for TikTok ads, UGC-style product demos, Reels, and YouTube Shorts.
Sourced from ClawHub,
Authored by Zero2Ai
Installation
Please help me install the skill `skill-runway-video-gen` from SkillHub official store.
npx skills add Zero2Ai-hub/skill-runway-video-gen
skill-runway-video-gen
Wraps Runway Gen4 Turbo image-to-video API. Point at a product image, describe the motion, get an MP4. No browser needed.
Usage
uv run scripts/generate_video.py
--image product.jpg
--prompt "water droplets falling, soft bokeh, slow motion"
--output output.mp4
--duration 10
--ratio 720:1280
Args
| Arg | Default | Description |
|---|---|---|
--image |
required | Path to source product image |
--prompt |
"" |
Motion description (optional but recommended) |
--output |
required | Output MP4 path |
--duration |
10 |
Video length: 5 or 10 seconds |
--ratio |
720:1280 |
Aspect ratio (vertical for TikTok) |
Config
API key is read from (in order):
1. RUNWAY_API_KEY environment variable
2. ~/tiktok-api.json → runway.apiKey
Cost
| Duration | Cost |
|---|---|
| 5s | $0.25 |
| 10s | $0.50 |
Always use 10s — you get more content to work with.
Known quirks
Last 1–2s often freezes. Fix: stretch to 12s at 0.83x speed using MoviePy:
from moviepy import VideoFileClip
clip = VideoFileClip("output.mp4")
slow = clip.with_effects([vfx.MultiplySpeed(0.83)])
slow.write_videofile("output_12s.mp4", fps=30)
Rate limits
No per-minute quota (unlike Veo). Runway charges per second of output.
Pipeline integration
This skill feeds into skill-tiktok-video-pipeline as the video generation step. The pipeline handles slowmo stretch and caption overlay automatically.