Audio
MP4 转 MP3
把视频的音轨转成 MP3 文件，码率可调。
Waiting for media
Processing video...No file selected
Selected files stay on this device. File sizes shown before processing use browser metadata only, such as 1.00 MB units.
Your video is processed locally in your browser and is not uploaded to our servers. Processing starts only when you click the button - nothing happens until then.
使用方法 MP4 转 MP3
- 1.选择码率 - 按画质需求选择 96 kbps 到 320 kbps。
- 2.上传视频 - 拖入 MP4 或其他支持的视频文件。
- 3.提取 - 工具提取音轨并丢弃视频。
- 4.下载 - 预览音频并下载 MP3。
MP4 转 MP3 功能
Supported MP4 to MP3 Formats
Privacy
Files are handled as local browser objects. BeYourTools does not upload video or audio contents, does not store filenames, and does not send media to third-party processing APIs.
Video Standards & Simple Playback Guide
Working with video requires balancing file size with clear playback. Using MP4 to MP3 helps you prepare clean video clips that play smoothly on any phone, tablet, or computer. Whether you need smaller clips for email or fast-loading videos for your website, our tool gets the job done quickly.
Fast Browser Processing
All video slicing, frame capture, and encoding run directly inside your browser. Your computer or phone handles the work locally, so your large video files never upload over the web.
Everyday Compatibility
Your saved clips keep standard screen shapes, true colors, and clean sound. They open immediately in Apple QuickTime, Windows Media Player, Chrome, and Safari without extra plugins.
MP4 转 MP3 常见问题
视频没有音频怎么办？
工具会显示友好的处理错误提示，请选择含音轨的视频。
会保留视频吗？
不会。输出只有 MP3 音频文件。
我的视频会被上传到服务器吗？
不会。本工具在您的浏览器本地处理文件，BeYourTools 不会上传、存储视频，也不会把媒体发给处理 API。
Does processing reduce the quality or resolution of my original video?
Trimming, cutting, and frame extraction keep your original video resolution and picture clarity. Our compressor tool lets you choose how much file size to shave off while keeping your picture sharp.
Are my personal videos uploaded to or viewable by anyone else?
No. All video editing happens right in your browser memory. Your files are never sent to our servers or saved anywhere online. Everything stays safe on your own device.