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Process audio and video with the `ffmpeg` / `ffprobe` CLIs — convert, trim, extract audio, resize, change format, make GIFs, inspect media. Use for any audio/video transformation.
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
| name | ffmpeg |
| description | Process audio and video with the `ffmpeg` / `ffprobe` CLIs — convert, trim, extract audio, resize, change format, make GIFs, inspect media. Use for any audio/video transformation. |
| version | 1.0.0 |
| requires_tools | ["os.shell.run"] |
| dangerous | false |
Transform audio and video files with ffmpeg and inspect
them with ffprobe. Operations are non-destructive: always write to a new
output file. Re-encoding can be slow on long media — set realistic expectations.
Verify with one solo step:
[{ "tool": "os.shell.run", "args": { "cmd": "ffmpeg", "args": ["-version"] } }]
Outcome map:
exit 0 + version → ready, proceed.command not found: ffmpeg → enter Setup playbook → "ffmpeg missing".Reply (solo reply step):
«
ffmpegне установлен. Могу поставить:brew install ffmpeg. Поставить?»
On yes:
[{ "tool": "os.shell.run", "args": { "cmd": "brew", "args": ["install", "ffmpeg"] } }]
On Linux: apt-get install ffmpeg.
ffprobe).yt-dlp territory (separate skill).imagemagick skill.-c copy to avoid re-encoding.All examples invoke os.shell.run. Inspect first with ffprobe; the approval
gate surfaces each write. Use -c copy to remux without re-encoding when only
the container changes.
| Goal | cmd / args |
|---|---|
| Inspect media | ffprobe ["-hide_banner", "in.mp4"] |
| Convert MOV → MP4 | ffmpeg ["-i", "in.mov", "-c:v", "libx264", "-c:a", "aac", "out.mp4"] |
| Extract audio (MP3) | ffmpeg ["-i", "in.mp4", "-vn", "-q:a", "2", "out.mp3"] |
| Trim (start 30s, 30s long) | ffmpeg ["-ss", "00:00:30", "-i", "in.mp4", "-t", "30", "-c", "copy", "clip.mp4"] |
| Resize to 720p | ffmpeg ["-i", "in.mp4", "-vf", "scale=-2:720", "out_720p.mp4"] |
| Video → GIF | ffmpeg ["-i", "in.mp4", "-vf", "fps=12,scale=480:-1", "out.gif"] |
| Extract one frame | ffmpeg ["-ss", "00:00:05", "-i", "in.mp4", "-frames:v", "1", "frame.png"] |
| Remux only (fast) | ffmpeg ["-i", "in.mkv", "-c", "copy", "out.mp4"] |
ffprobe first when unsure of codecs/duration/resolution.-c copy when
only the container changes.ffprobe duration if relevant) after each run.Transcribe speech from audio files (mp3, m4a, wav, ogg, flac, webm) to text using the local `whisper` CLI — no API key. Use whenever a task hinges on the spoken content of an audio attachment.
Read macOS Calendar events via the `icalBuddy` CLI and create events via AppleScript (osascript). Use to check the user's calendar, agenda, upcoming events, or add an event on macOS.
Manage Apple Notes via the `memo` CLI on macOS — create, view, search, edit, export.
Manage Apple Reminders via the `remindctl` CLI on macOS — list, add, complete, delete, manage lists.
Manage Docker containers, images, volumes, and Compose stacks via the `docker` CLI — list, inspect, logs, run, build, stop, remove, compose up/down. Use for local container ops.
Drive GitHub via the official `gh` CLI — repos, issues, pull requests, releases, gists, Actions runs, and raw REST through `gh api`. Use when the user asks to inspect or manage GitHub.