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dead-air-cutter

dead-air-cutter is a skill for Claude Code, Codex from Soboljem/transcribe-mcp. It costs 108 tokens per session (1,747 once invoked), scanned A, original, MIT.

A local video and podcast editing skill that finds silent sections in a recording, removes them with FFmpeg, and creates subtitles timed to the shortened video. FFmpeg is a command-line tool for processing audio and video.

In plain words
What is it for?
It is for tightening talks, streams, vlogs, lectures and podcasts stored on disk. It turns a recording into a shorter video and a matching subtitle file.
Why use it?
Manual removal of pauses is slow, and cutting a recording can make existing subtitles fall out of sync. This workflow handles the silence cuts and produces subtitles for the edited version.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

not rated 0repo 23d ago A scan 108 tokens original MIT

Good fit It is for tightening talks, streams, vlogs, lectures and podcasts stored on disk. It turns a recording into a shorter video and a matching subtitle file.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/soboljem/transcribe-mcp/dead-air-cutter
View source ↗ Soboljem/transcribe-mcp
Install

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.

Any agent
npx skills add Soboljem/transcribe-mcp --skill dead-air-cutter
Clone the repo
git clone --depth 1 https://github.com/Soboljem/transcribe-mcp

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for dead-air-cutter

README.md
[![agentmods](https://agentmods.dev/badge/skills/soboljem/transcribe-mcp/dead-air-cutter/github.svg)](https://agentmods.dev/skills/soboljem/transcribe-mcp/dead-air-cutter)
Your own site
<a href="https://agentmods.dev/skills/soboljem/transcribe-mcp/dead-air-cutter"><img src="https://agentmods.dev/badge/skills/soboljem/transcribe-mcp/dead-air-cutter/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.

agentmods 80×15 button for dead-air-cutter

Your own site · 80×15
<a href="https://agentmods.dev/skills/soboljem/transcribe-mcp/dead-air-cutter"><img src="https://agentmods.dev/badge/skills/soboljem/transcribe-mcp/dead-air-cutter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,747 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00108 $0.01747
Opus 5.5 $0.00043 $0.00699
Sonnet 5.5 $0.00022 $0.00349
Haiku 4.5 $0.00011 $0.00175

Measured 22d ago against content hash af6c75d77ab0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dead-air-cutter scanned grade A with 0 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 22d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/cutmath.mjs, scripts/cutmath.test.mjs, scripts/dac.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/dead-air-cutter/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

dead-air-cutter

Turns talk.mp4 into talk_cut.mp4 and talk_cut.srt. The pauses are gone, and the subtitles line up with the cut version, not the original.

What it needs — check before starting

  1. ffmpeg and ffprobe on PATH (ffmpeg -version). If they're missing, tell the user and stop.
  2. Node 20+ (node --version). It's already there if npx runs MCP servers.
  3. The transcribe-mcp MCP server, version 0.3.0 or newer. It has to be configured with TRANSCRIBE_MCP_WALLET_KEY: the private key of a dedicated wallet holding a few dollars of USDC on Base. Call shop_info first. It's free and says whether the wallet is ready. If transcribe_url has no file parameter, the server is older than 0.3.0. Tell the user to update it: put transcribe-mcp@latest in the MCP config and restart the client.

What leaves the machine — tell the user once, up front

  • The audio only (never the video) goes to https://transcribe.soboljem.cz, compressed to mono Opus. It's transcribed there by Whisper on Cloudflare Workers AI.
  • Each call is paid from the user's wallet in USDC over x402. That's $0.05 per ≤6-minute part, plus $0.002 for the cut list. A 10-minute video costs about $0.10, and an hour about $0.50. The MCP server refuses any single quote above $0.10.
  • For the cut list, only the timings (start/end of each speech segment) are sent. Nothing else leaves the machine.
  • The shop never stores the audio. It keeps a copy of the result for up to ~8 hours. That copy is a shop-side safeguard this client can't use: calling again always pays again. Each sale also leaves a permanent row in the shop's books: wallet address, tx hash and counts, the same things that are public on Base. Payment goes through the PayAI facilitator. The full list is at https://transcribe.soboljem.cz/terms. Point the user there if they ask.

What runs locally

  • scripts/dac.mjs runs ffmpeg and ffprobe (through execFileSync, no shell). It reads the video. It writes into the work folder (audio parts, manifest.json, transcripts, segments.json, deadair.json, cuts.json), and writes <name>_cut.mp4 and <name>_cut.srt next to the video. A previous cut with the same name is overwritten. On a fresh split it deletes its own leftovers in the work folder (part*.opus, manifest.json, segments.json, deadair.json, filter.txt), but never a paid transcript or cuts.json.
  • It makes no network calls and never touches the wallet. Only the MCP server talks to the shop and signs payments. This skill never reads the private key.

Read the full file on GitHub · 111 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 22d ago First seen · 111 lines · 108 tokens per session scan A af6c75d77ab0

Subscribe to this mod's changes

dead-air-cutter is a skill published in the GitHub repository Soboljem/transcribe-mcp (0 stars, last pushed 23d ago), licensed MIT. It adds 108 tokens to every session and 1,747 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-17.

Creative and media
Related

dead-air-cutter compared with skills from other repositories

dead-air-cutter next to 6 skills from other repositories
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