Audio Video To Text

音视频转文字技能,使用 Whisper 进行语音识别。支持多种音视频格式,可输出纯文本、SRT/VTT 字幕或 JSON 格式。适用于会议记录、视频字幕生成、采访整理、播客转录等场景。

MIT-0 · Free to use, modify, and redistribute. No attribution required.
0 · 222 · 3 current installs · 3 all-time installs
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Purpose & Capability
Name/description (audio/video → text using Whisper) align with the included script and SKILL.md. Required tools (whisper package, ffmpeg) are explainable and necessary for transcription.
Instruction Scope
SKILL.md and the script limit actions to installing dependencies, extracting audio, loading a Whisper model, transcribing, formatting output, and deleting temporary audio. There are no instructions to read unrelated files, access environment secrets, or send data to external endpoints.
Install Mechanism
This is an instruction-only skill (no install spec). The script depends on the openai-whisper and ffmpeg-python packages and a system ffmpeg binary. Note: loading Whisper models will typically download large model weight files from the network the first time they are used, consuming disk and bandwidth.
Credentials
The skill requires no environment variables, credentials, or config paths. It does not access unrelated secrets or other services.
Persistence & Privilege
always:false and default invocation settings. The skill does not attempt to persist or modify other skills or system-wide agent configuration.
Assessment
This skill appears to do only local transcription with Whisper and ffmpeg. Before installing/running: (1) verify you trust the skill source and the PyPI package name (openai-whisper) you will install, (2) be aware that Whisper will likely download large model files (especially medium/large) which use network bandwidth and disk space and may require substantial RAM/GPU, (3) install ffmpeg from official sources, (4) run the script in a virtual environment or sandbox and inspect the code if you have concerns, and (5) only run it on files you trust (the script spawns ffmpeg as a subprocess and writes a temp audio file under /tmp by default).

Like a lobster shell, security has layers — review code before you run it.

Current versionv1.0.0
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License

MIT-0
Free to use, modify, and redistribute. No attribution required.

SKILL.md

音视频转文字

概述

本技能使用 OpenAI Whisper 模型将音频/视频文件转换为文字。支持自动语言检测和多种输出格式。

何时使用

  • 会议录音转文字记录
  • 视频内容生成字幕(SRT/VTT)
  • 采访/播客内容整理
  • 语音备忘录转文本
  • 多语言视频翻译准备

快速开始

1. 安装依赖

pip install openai-whisper ffmpeg-python

确保系统已安装 ffmpeg:

# Ubuntu/Debian
sudo apt-get install ffmpeg

# macOS
brew install ffmpeg

# Windows
# 从 https://ffmpeg.org/download.html 下载

2. 基本用法

python scripts/transcribe.py <输入文件> [输出文件] [选项]

3. 示例

# 转录 MP4 视频,输出文本
python scripts/transcribe.py meeting.mp4

# 转录音频,输出 SRT 字幕
python scripts/transcribe.py podcast.mp3 podcast.srt --output-format srt

# 指定中文和较小模型(更快)
python scripts/transcribe.py interview.wav --model tiny --language zh

# 输出带时间戳的 JSON
python scripts/transcribe.py video.mp4 result.json --output-format json

命令行选项

选项说明默认值
--model模型大小:tiny, base, small, medium, largebase
--language语言代码:zh, en, ja 等自动检测
--output-format输出格式:txt, srt, vtt, jsontxt
--device运行设备:cpu, cudacpu
--keep-audio保留临时音频文件false

模型选择指南

模型大小速度精度适用场景
tiny39M最快一般快速测试、短音频
base74M良好日常使用
small244M中等较好正式场合
medium769M很好高精度需求
large1550M最慢最佳专业转录

输出格式说明

TXT(纯文本)

这是转录的完整文本内容,适合阅读和编辑。

SRT(字幕格式)

1
00:00:01,000 --> 00:00:04,000
这是第一句字幕。

2
00:00:04,500 --> 00:00:07,000
这是第二句字幕。

VTT(Web 字幕)

WEBVTT

00:00:01.000 --> 00:00:04.000
这是第一句字幕。

00:00:04.500 --> 00:00:07.000
这是第二句字幕。

JSON(完整数据)

包含分段、时间戳、置信度等完整信息,适合程序处理。

支持的文件格式

音频: MP3, WAV, FLAC, OGG, M4A, AAC

视频: MP4, AVI, MOV, MKV, WEBM, FLV

性能优化建议

  1. 短音频优先用 tiny/base 模型 - 速度快,精度够用
  2. 长内容用 CPU - 避免 GPU 内存不足
  3. 指定语言 - 可提升准确率和速度
  4. 批量处理 - 脚本可循环调用处理多个文件

常见问题

转录质量不佳

  • 尝试更大的模型(small/medium/large)
  • 指定正确的语言代码
  • 确保音频质量清晰

处理速度慢

  • 使用更小的模型(tiny/base)
  • 如有 GPU,使用 --device cuda
  • 缩短音频长度或分段处理

内存不足

  • 使用更小的模型
  • 将长文件分割后分别处理
  • 关闭其他占用内存的程序

脚本

  • scripts/transcribe.py - 主转录脚本

参考资料

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