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mp4box

80 / 100 · Low risk

Fine to try.

By javimosch/supercli (GitHub) · other · 57 stars · scanned at commit 18c32f4

mp4box — GPAC multimedia packager. Multiplex, demux, fragment, and analyze MP4 files. Essential for DASH/HLS packaging.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'mp4box' ] || [ -L ~/.agents/skills/'mp4box' ]; then echo 'A skill folder named mp4box already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/javimosch/supercli' "$d" && git -C "$d" checkout --quiet '18c32f4b7197d246bdedcc9eca5d0403eaac0bc2' -- 'plugins/mp4box/skills/quickstart' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/mp4box/skills/quickstart' ~/.agents/skills/'mp4box' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'mp4box' ~/.claude/skills/'mp4box' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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