Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add augchan42/inkstone --skill video-to-shortsgit clone --depth 1 https://github.com/augchan42/inkstoneWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/augchan42/inkstone/video-to-shorts)<a href="https://agentmods.dev/skills/augchan42/inkstone/video-to-shorts"><img src="https://agentmods.dev/badge/skills/augchan42/inkstone/video-to-shorts/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/augchan42/inkstone/video-to-shorts"><img src="https://agentmods.dev/badge/skills/augchan42/inkstone/video-to-shorts.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00102 | $0.03742 |
| Opus 5 | $0.00051 | $0.01871 |
| Sonnet 5 | $0.00020 | $0.00748 |
| Haiku 4.5 | $0.00010 | $0.00374 |
Grade B, and why
video-to-shorts scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
| **Linux** | `sudo apt install ffmpeg` (Debian/Ubuntu builds include libass) — or `brew install ffmpeg` on Linuxbrew. | Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -L https://evermeet.cx/ffmpeg/getrelease/ffmpeg/zip -o /tmp/ff.zip How it starts
The opening of the file, as written. The whole thing — 243 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Video → Shorts
Turn a long talking-head video into one or more polished vertical shorts (≤ 60s, 9:16, burned-in subtitles). The skill transcribes the source, auto-suggests the best moments, then cuts, crops, and subtitles a clip you approve.
The deliverable is a finished *-en.mp4 ready to upload by hand. No YouTube account, API key, or upload CLI needed.
When to use
- "Make shorts/reels/clips out of this podcast / interview / talk"
- "Find the best moments in this video and cut vertical clips"
- "Transcribe this and pull out quotable soundbites"
- Any long-form talking footage that needs to become short vertical content
Best for static, single- or two-person talking footage. Fast-cut montages, music videos, or heavy on-screen graphics need a human editor — flag that and stop.
One-time setup (cross-platform)
You need three tools: ffmpeg with libass (cut/crop/burn-in), Whisper (transcription), and optionally yt-dlp (only if the source is a URL).
ffmpeg — must include libass (for subtitle burn-in)
Check first: ffmpeg -version | grep -o libass. If it prints libass, you're done.
| OS | Install |
|---|---|
| Linux | sudo apt install ffmpeg (Debian/Ubuntu builds include libass) — or brew install ffmpeg on Linuxbrew. |
| Windows (WSL2) | Inside Ubuntu-on-WSL: sudo apt install ffmpeg. Do everything from the WSL shell, not PowerShell. |
| macOS | ⚠️ Default Homebrew ffmpeg omits libass — the subtitles filter fails with a cryptic "No option name near …". Install a libass static build to ~/.local/bin: |
# macOS only — libass-enabled static ffmpeg
mkdir -p ~/.local/bin
curl -L https://evermeet.cx/ffmpeg/getrelease/ffmpeg/zip -o /tmp/ff.zip
unzip -o /tmp/ff.zip -d ~/.local/bin/
chmod +x ~/.local/bin/ffmpeg
~/.local/bin/ffmpeg -version | grep -E "libass|libfreetype" # both must appear
On macOS, use ~/.local/bin/ffmpeg for the burn-in step only; the system ffmpeg is fine for cut/crop.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 243 lines · 102 tokens per session scan B 10d1cee7f6c1
video-to-shorts is a skill published in the GitHub repository augchan42/inkstone (4 stars, last pushed yesterday), licensed MIT. It adds 102 tokens to every session and 3,742 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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