Extract Audio (from Video) | 72Tool Free Online Audio Tool

Extract Audio (from Video) — a free online Audio Tools tool. Runs entirely in your browser, no upload, no registration, works on phone and desktop.

Extract Audio (from Video) is a free online tool in the 72Tool toolbox for Audio tasks. Enter your input to get instant, accurate results — handy for work, development and daily use.

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Extract Audio (from Video)

视频提取音频是一款免费的在线音频格式转换与剪辑工具，无需下载安装、无需注册登录，打开网页即可使用。支持MP4提取、MOV提取，所有提取操作均在浏览器本地完成，文件不会上传到服务器，充分保护数据隐私。无论使用电脑、平板还是手机，都能直接在浏览器中打开使用。

视频提取音频适用于播客与音乐处理、音频截取合并等场景，适合提取音频、转换格式或裁剪片段，处理全程在本地完成。作为一款轻量的在线音频格式转换与剪辑工具，它免去了安装专业软件的麻烦，随开随用，是日常播客与音乐处理中的实用小工具。

使用教程
  1. 点击上传区域，选择本地的文件（支持页面提示的格式）。
  2. 点击「提取音频下载」按钮，等待浏览器在本地完成处理。
  3. 处理完成后自动下载结果文件，或在本页结果区查看预览。
常见问题
Q1：支持哪些格式？
A：支持 MP3、WAV、OGG 等常见格式。
Q2：截取后音质会下降吗？
A：按原参数导出时音质基本保持，压缩档位会影响体积与音质。
Q3：处理要上传吗？
A：不需要，全部本地完成。
Q4：文件大小有限制吗？
A：建议单次处理不超过数百 MB，过大可能卡顿。
Q5：视频提取音频支持MP4格式吗？
A：支持，可直接上传MP4文件，在浏览器本地完成提取，文件不会上传到服务器。
Q6：视频提取音频可以在手机上使用吗？
A：可以，本工具基于网页运行，手机、平板、电脑均可直接打开网页使用，无需安装 App。
相关工具
Batch Audio Converter Batch Audio Duration Counter Change Audio Bitrate Audio Channel Converter Audio Converter Trim Trailing Silence Remove Silent Parts Audio Denoise
Features & Use Cases

Extract Audio (from Video) is a free online Audio Tools tool. No download or registration is required — just open the page and use it instantly. All processing runs locally in your browser, so your files and data never leave your device, keeping everything private.

How to Use
  1. Enter or paste the content you want to process into the input area.
  2. Set any options you need (such as units or modes) from the controls on the page.
  3. Click the action button and let the tool process everything locally in your browser.
  4. View the result, then copy or download it as needed.
FAQ
Q：Is the result accurate?
A：It uses standard algorithms and conversion factors, accurate enough for everyday and work use.
Q：What file formats are supported?
A：Popular formats are supported; check the options and notes on the page.
Q：Can I use it on my phone?
A：Yes. It runs in any modern browser on phone, tablet, or desktop — no app install needed.
Q：Is it really free?
A：Yes, this tool is completely free to use, with no login required.
Related Tools
Batch Audio Converter Batch Audio Duration Counter Change Audio Bitrate Audio Channel Converter Audio Converter Trim Trailing Silence Remove Silent Parts Audio Denoise

Note: Extract Audio (from Video) runs entirely in your browser; your data is not uploaded to any server. Explore more free online tools on the 72Tool homepage.