Turn a lesson into audio for your commute, prepare a meeting recording for transcription, or keep a video's soundtrack for further editing. Extract Audio from Video converts the audio track into a common audio format directly in your browser.

Available output formats

• MP3: small files and broad support; a practical default for phones, car stereos, and audio players.
• M4A: commonly uses AAC and works well in many Apple workflows.
• WAV: typically uncompressed and large; useful for editing or transcription tools that require it.

- FLAC：无损压缩，适合需要避免进一步有损编码的工作流程。

- OGG：一种开放格式，用于网页和游戏音频。

- WMA：适用于一些较旧的 Windows 设备。

- AC3：用于一些家庭影院系统。

如何提取音频

1. 打开 从视频中提取音频 并选择一个视频文件。
2. 选择一个 输出格式；默认是 mp3。
3. 点击 开始。转换过程中可以点击 停止 取消。
4. 查看输出大小，然后点击 下载。

实用提示

• 只需要一个片段？ 先用 视频剪辑 裁剪，或者提取完整音轨后再使用 音频剪辑。
• 准备转写输入？ MP3 和 WAV 是常见选择；请检查接收服务的要求。
• 需要更小的文件？ 导出 MP3，然后尝试 音频压缩。
• WAV 和 FLAC 无法提升源质量。 无损输出可以避免再一次有损编码，但无法恢复视频音频中已经被移除的细节。

Why no upload is needed

The tool uses a WebAssembly version of FFmpeg to read the video and convert its audio track inside the browser. Media processing stays on your device, making it useful for meeting recordings and personal videos.

Frequently asked questions

Why is there no sound in the result?

First check that the source video actually contains an audio track. Some screen recordings have none.

How large can the source video be?

The practical limit depends on available browser memory. A desktop browser and files of a few hundred megabytes or less are a useful starting point, not a guaranteed maximum.

Can I use a MOV recorded on a phone?

Yes, provided the browser can read the required media information and the processing engine supports its codecs.

Related tools

• Audio Format Converter
• Audio Clip
• Video Format Converter