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Render music videos from audio files and lyrics using Remotion. Accepts audio + LRC/JSON lyrics + title to produce MP4 videos with waveform visualization and synced lyrics display. Use when users mention MV generation, music video rendering, creating video from audio/lyrics, or visualizing songs.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Build premium, TV-commercial-grade product highlight-reel promo videos from a handful of screen recordings. Music-only by default (optional VO-narrated cut), HyperFrames + paused GSAP, rendered and muxed locally. Ships a full kit — 16:9 + 9:16 films and matching key-art posters — in three swappable, production-proven themes. Use when the user asks for a product promo / launch film / hero reel / app commercial / "video like <reference>" / feature sizzle from screen captures, or says "highlight reel", "product TV commercial", "aurora theme", "minimal / notion-style promo". Three theme presets: AURORA (dark, glowing, chromatic, bold), MINIMAL (light Notion-white, floating cards, one accent, confident restraint), and LINE ART (cream paper, bold navy ink, one gold accent, hand-drawn framed panels). Ships a self-contained EnConvo scaffold (bundled logo, keycaps, SFX, music bed) that reproduces the launch film by dropping in new product clips.
Turn screen recordings into polished videos — marketing promos, user guides, product demos, and more. Goal-aware pipeline: detects user intent, selects strategy, recommends a plan, then executes. Full pipeline: intent detection → strategy selection → source analysis → storyboard planning → source prep → VO generation → frame-by-frame compositing → audio mixing → final encode. Supports animated presenters (AI animal/character with rembg cutout), per-word caption sync (pop, karaoke, static styles), multi-zoom animations, overlay dissolve transitions, time-mapped VO-to-source sync, CJK-aware captions, letterbox-aware cropping, and keypress + shortcut animation overlays with frame-aligned tick/tock SFX (canonical pattern for product demos that show hotkeys; ships proven SFX library at assets/sfx/). Use when: (1) user has screen recordings and wants a polished video — marketing, tutorial, demo, or changelog, (2) user says "make a promo video", "tutorial from this recording", "TikTok video", "marketing video", "use
Unified financial analysis & portfolio management toolkit. Routes to the right sub-system based on intent. Covers: daily market briefings, macro risk monitoring, sentiment scanning, strategy evolution & signals, options analysis, 禅動 chart analysis, COT smart-money reports, and full portfolio checking (structured notes, sell puts, FX options, accumulators) with XLSX report generation. Use when user says /financial-analysis, 'daily briefing', 'morning briefing', 'macro risk', 'liquidity check', 'sentiment scan', 'market sentiment', 'evolve strategy', 'create strategy', 'strategy signal', 'what does the strategy say', 'quick look', 'scan ticker', 'ride the rally', 'catch dips', 'play safe', '禅動', 'chandong', 'analyze ticker', 'fcn check', 'fcn status', 'check fcn', 'portfolio check', 'portfolio report', 'structured products', 'are my fcns safe', 'sell puts', 'accumulators', 'options analysis', 'cot report', 'smart money'.
Visible step-by-step walkthrough mentor for live browser/app tutoring across OptionCharts.io, TradingView, and EnConvo Settings. Use when the user wants to be walked through a page, chart, setup flow, tool, or concept viewport by viewport, including options/stock analysis with option chains, GEX, DEX, open interest, max pain, Greeks, volatility, P&L charts, TradingView charts, indicators, drawing tools, watchlists, screeners, alerts, layouts, paper trading, or EnConvo setup tasks such as global providers, AI models, credentials, agents, tools, skills, shortcuts, dictation, knowledgebase, account, and developer settings.
Conduct rigorous, McKinsey-style industry / sector research and produce a structured research report. Use when the user says /industry-research-mckinsey or asks to research an industry/sector/market/value chain, wants market sizing (TAM/SAM/SOM), competitive landscape, value-chain / industry-chain analysis, profit pools, demand-supply dynamics, industry drivers, or trend/outlook analysis, or asks for a 行业研究 / 产业研究 / 行业报告 / 赛道分析 / 投研报告 / industry report / sector deep-dive / market analysis. Also fires when the user wants to find supply bottlenecks, pricing-power chokepoints, or the source of excess returns (超额收益) along a value chain (the 产业投资人 / bottleneck lens). Bilingual: follows the user's language. Do NOT use for company-only financial modeling unrelated to an industry, or for pure document formatting.
Produce multi-act long-form Mandarin financial analysis videos for social-media upload (TikTok/Bilibili/YouTube/WeChat视频号/X). Given any input source (news article, earnings call, IPO filing, macro print, chart, tweet thread, raw data), build a broadcast-grade anchor-led explainer using a locked pipeline — script in tight 5字/second cadence, render anchor with xAI Grok Imagine Video i2v with baked Mandarin VO and locked identity, composite editorial GSAP overlay panels via HyperFrames in the right 40% of frame, concat acts, mix BGM, ship MP4. Use when the user gives a finance/markets/macro/equity/options/IPO/crypto source and asks for a viral video, a 解读视频, a 拆解视频, an explainer, a TG/SNS-ready clip, or simply says "make a video about this". Also use when the user says "finance-capital-markets-video-maker", "FCM video", "market video", "anchor video", or "Vivieen video".
| name | acestep-simplemv |
| description | Render music videos from audio files and lyrics using Remotion. Accepts audio + LRC/JSON lyrics + title to produce MP4 videos with waveform visualization and synced lyrics display. Use when users mention MV generation, music video rendering, creating video from audio/lyrics, or visualizing songs. |
Render music videos with waveform visualization and synced lyrics from audio + lyrics input.
scripts/ directory within this skillBefore first use, check and install dependencies:
# 1. Check Node.js
node --version
# 2. Install npm dependencies
cd {project_root}/{.claude or .codex}/skills/acestep-simplemv/scripts && npm install
# 3. Check ffprobe
ffprobe -version
If ffprobe is not available, install ffmpeg (which includes ffprobe):
choco install ffmpeg or download from https://ffmpeg.org/download.html and add to PATHbrew install ffmpegsudo apt-get install ffmpeg (Debian/Ubuntu) or sudo dnf install ffmpeg (Fedora)cd {project_root}/{.claude or .codex}/skills/acestep-simplemv/
./scripts/render-mv.sh --audio /path/to/song.mp3 --lyrics /path/to/song.lrc --title "Song Title"
Output: MP4 file at out/<audio_basename>.mp4 (or custom --output path).
./scripts/render-mv.sh --audio <file> --lyrics <lrc_file> --title "Title" [options]
Options:
--audio Audio file path (absolute paths supported)
--lyrics LRC format lyrics file (timestamped)
--lyrics-json JSON lyrics file [{start, end, text}] (alternative to --lyrics)
--title Video title (default: "Music Video")
--subtitle Subtitle text
--credit Bottom credit text
--offset Lyric timing offset in seconds (default: -0.5)
--output Output file path (default: out/<audio_basename>.mp4)
--codec h264|h265|vp8|vp9 (default: h264)
--background Background image file path (if omitted, uses animated gradient)
--browser Custom browser executable path (Chrome/Edge/Chromium)
--max-size Max output file size in MB (e.g. 24). Auto-compresses if exceeded.
Use for IM platforms (WhatsApp≤16MB, Discord≤25MB, Telegram≤50MB)
Environment variables:
BROWSER_EXECUTABLE Path to browser executable (overrides auto-detection)
Remotion requires a Chromium-based browser for rendering. The script auto-detects browsers in this priority order:
BROWSER_EXECUTABLE environment variable--browser CLI argumentchrome-headless-shell, downloaded by Remotion)--chrome-mode=chrome-for-testing)--chrome-mode=chrome-for-testing)--chrome-mode=chrome-for-testing)Important: New versions of Chrome/Edge removed the old headless mode. When using regular Chrome/Edge/Chromium, the script automatically sets --chrome-mode=chrome-for-testing (which uses --headless=new). When using chrome-headless-shell, it uses the default headless-shell mode (which uses --headless=old). This is handled transparently.
If no browser is found, Remotion will attempt to download chrome-headless-shell from Google servers. This will fail if Google servers are inaccessible from your network.
Since Edge is pre-installed on Windows 10/11, it should be auto-detected without any manual configuration. The script automatically detects Chrome/Edge and uses the correct headless mode. If auto-detection fails:
# Option 1: Set environment variable
export BROWSER_EXECUTABLE="/path/to/msedge.exe"
# Option 2: Pass as CLI argument
./scripts/render-mv.sh --audio song.mp3 --lyrics song.lrc --title "Song" --browser "/path/to/msedge.exe"
# Option 3: Enable proxy and let Remotion download chrome-headless-shell
# Basic render
./scripts/render-mv.sh --audio /tmp/abc123_1.mp3 --lyrics /tmp/abc123.lrc --title "夜桜"
# Custom output path
./scripts/render-mv.sh --audio song.mp3 --lyrics song.lrc --title "My Song" --output /tmp/my_mv.mp4
# With subtitle and credit
./scripts/render-mv.sh --audio song.mp3 --lyrics song.lrc --title "Song" --subtitle "Artist Name" --credit "Generated by ACE-Step"
# With background image
./scripts/render-mv.sh --audio song.mp3 --lyrics song.lrc --title "Song" --background /path/to/cover.jpg
# Compress for Discord upload (max 25MB)
./scripts/render-mv.sh --audio song.mp3 --lyrics song.lrc --title "Song" --max-size 24
# Compress for WhatsApp (max 16MB)
./scripts/render-mv.sh --audio song.mp3 --lyrics song.lrc --title "Song" --max-size 15
When sending MV to chat platforms, use --max-size to auto-compress:
| Platform | Limit | Recommended --max-size |
|---|---|---|
| 16MB | 10 | |
| Discord (free) | 25MB | 10 |
| 10MB | 10 | |
| Telegram | 50MB | 20 |
| Slack (free) | 1GB | - |
The compression uses ffmpeg two-pass encoding to achieve the best quality within the size constraint.
When running in containers (e.g. OpenClaw), CJK fonts may not be pre-installed, causing lyrics to render as □ boxes. The script automatically:
fc-list)fonts-noto-cjk (Debian/Ubuntu), font-noto-cjk (Alpine), or google-noto-sans-cjk-fonts (Fedora/RHEL)If auto-install doesn't work, manually install fonts before rendering:
# Debian/Ubuntu
apt-get install -y fonts-noto-cjk
# Alpine
apk add font-noto-cjk
# Fedora/RHEL
dnf install -y google-noto-sans-cjk-fonts
IMPORTANT: Use the audio file's job ID as the output filename to avoid overwriting. Do NOT use custom names like --output my_song.mp4. Let the default naming handle it (derives from audio filename).
Default output uses the audio filename as base:
acestep_output/{job_id}_1.mp3acestep_output/{job_id}_1.lrc--output acestep_output/{job_id}.mp4 (use the job ID from the audio file)Example: if audio is chatcmpl-abc123_1.mp3, pass --output acestep_output/chatcmpl-abc123.mp4
--title short and single-line (max ~50 chars, auto-truncated)--subtitle for additional info--titleGood: --title "Open Source" --subtitle "ACE-Step v1.5"
Bad: --title "Open Source - ACE-Step v1.5\nCelebrating Music AI"
public/ by render.mjs