MP4 转 MP3 转换器
从 MP4 视频中提取音频并保存为 MP3。所有操作都在您的浏览器中进行，因此您的文件不会离开设备。
Drop your MP4 file here
or click to browse files
Works with MP4 video files in your browser
In Browser
No upload
Free
No cost
No Sign-Up
Start instantly
MP4 to MP3 Features
Extract MP3 audio from MP4 video with bitrate control, all in your browser.
MP4 Input
MP4 Audio Extraction
Reads the audio track from your MP4 and converts it to a clean MP3 file.
MP3 Output
Encodes the extracted audio to MP3 at the bitrate you choose.
Runs In Your Browser
The whole conversion happens locally, so your MP4 is never uploaded.
Privacy & Performance
Stays On Your Device
Your MP4 never leaves your device. The audio is extracted locally in the browser.
Bitrate Control
Choose from 64 to 320 kbps to balance MP3 file size and audio quality.
No Installation
Works on any modern desktop or mobile browser with no software to install.