video2mp3

A video-to-audio converter that extracts the sound from a video file and saves it as an MP3 file.

In plain words
What is it for?
Use it to extract audio from files such as MP4 videos, choose the MP3 filename, and save the result to a selected folder.
Why use it?
It removes the need to convert videos manually when you only need their audio.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/coderwanfeng/python-office/video2mp3
Any agent
npx skills add CoderWanFeng/python-office --skill video2mp3
Clone the repo
git clone --depth 1 https://github.com/CoderWanFeng/python-office

Made for: Claude Code, Codex.

Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 322 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00043 $0.00322
Opus 5 $0.00022 $0.00161
Sonnet 5 $0.00009 $0.00064
Haiku 4.5 $0.00004 $0.00032

Measured yesterday against content hash 5c4eb45e9c23, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

video2mp3 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 yesterday.

The scan reads SKILL.md. This mod also ships 1 executable file (__init__.py), 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/video/video2mp3/SKILL.md · 52 lines

What it actually says

video2mp3 Skill

将视频文件转换为 mp3 音频文件

功能描述

从视频中提取音频,保存为 mp3 格式。

所属分类

office/skills/video/video2mp3/

调用方式

from skills.video import video2mp3

video2mp3(
    path='./test.mp4',
    mp3_name='test.mp3',
    output_path='./'
)

参数说明

参数 类型 必填 默认值 说明
path str - 视频文件的路径
mp3_name str None 输出 mp3 文件的名称。如果未提供,默认为原视频文件名
output_path str './' 输出 mp3 文件的路径

返回值

None:在指定输出路径下生成 mp3 文件

使用示例

from skills.video import video2mp3
video2mp3(path='./movie.mp4', mp3_name='movie_audio.mp3')

原始函数

office.api.video.video2mp3

Files

What ships with it

1 file 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. yesterday First seen · 52 lines · 43 tokens per session scan A 5c4eb45e9c23

Subscribe to this mod's changes

video2mp3 is a skill published in the GitHub repository CoderWanFeng/python-office (1,346 stars, last pushed 12d ago), licensed Apache-2.0. It adds 43 tokens to every session and 322 once invoked, about $0.0002 per session on Opus 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 2026-08-30.

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