🎧 音频格式转换（M4A / FLAC / WAV / OGG 转 MP3）Audio Converter (to MP3 / WAV)
在浏览器里把 M4A、AAC、FLAC、WAV、OGG、OPUS、WebM 以及 MP4/MOV 视频里的声音批量转换成 MP3 或 WAV，可选码率（64–320 kbps）、采样率、单声道/立体声、音量标准化和截取片段，转换后可试听、单独下载或打包 ZIP，文件不上传。Batch-convert M4A, AAC, FLAC, WAV, OGG, OPUS, WebM and the audio of MP4/MOV videos to MP3 or WAV in your browser, with bitrate (64–320 kbps), sample rate, mono/stereo, volume normalisation and trimming; preview, download singly or as a ZIP — nothing is uploaded.
| 文件File | 时长Length | 原大小Size | 结果Result |
|---|
使用说明与常见问题How-to & FAQ
「音频格式转换（M4A / FLAC / WAV / OGG 转 MP3）」是什么？What is the Audio Converter (to MP3 / WAV)?
在浏览器里把 M4A、AAC、FLAC、WAV、OGG、OPUS、WebM 以及 MP4/MOV 视频里的声音批量转换成 MP3 或 WAV，可选码率（64–320 kbps）、采样率、单声道/立体声、音量标准化和截取片段，转换后可试听、单独下载或打包 ZIP，文件不上传。Batch-convert M4A, AAC, FLAC, WAV, OGG, OPUS, WebM and the audio of MP4/MOV videos to MP3 or WAV in your browser, with bitrate (64–320 kbps), sample rate, mono/stereo, volume normalisation and trimming; preview, download singly or as a ZIP — nothing is uploaded.
如何使用「音频格式转换（M4A / FLAC / WAV / OGG 转 MP3）」？How do I use the Audio Converter (to MP3 / WAV)?
把一个或多个音频/视频文件拖进来，选择输出格式（MP3 或 WAV）和码率等参数，点“开始转换”。完成后每个文件都可以试听和下载，多个文件可点“全部下载 ZIP”。只要一段时可以填写截取开始和结束时间。Drop one or more audio or video files, choose MP3 or WAV and options, and press Convert. Each result can be previewed and downloaded, or press Download all (ZIP). Fill in start/end to keep only part.
支持哪些格式？Which formats are supported?
能被你的浏览器解码的格式都可以：MP3、WAV、M4A/AAC、FLAC、OGG、OPUS、WebM，以及 MP4、MOV 视频里的音轨。Safari 和 Chrome 对少数格式（如 AMR、WMA）支持不同，不支持时会提示无法解码。Anything your browser can decode: MP3, WAV, M4A/AAC, FLAC, OGG, OPUS, WebM and the audio of MP4/MOV. Support for rarer formats like AMR or WMA varies by browser.
选多少码率合适？Which bitrate should I choose?
人声、录音、有声书选 64–128 kbps 即可；音乐建议 192 kbps，追求音质选 320 kbps。码率越高文件越大。64–128 kbps for speech and audiobooks, 192 kbps for music, 320 kbps for the best quality; higher bitrates make larger files.
大文件会卡吗？Are large files slow?
转换在你自己的设备上进行，一首 5 分钟的歌一般几秒完成；1 小时以上的长音频需要较多内存，手机上建议分段处理。Conversion runs on your device; a 5-minute song takes seconds. Hour-long files need lots of memory — split them on phones.
「音频格式转换（M4A / FLAC / WAV / OGG 转 MP3）」免费吗？文件会上传吗？Is the Audio Converter (to MP3 / WAV) free? Are my files uploaded?
「音频格式转换（M4A / FLAC / WAV / OGG 转 MP3）」完全免费，无需注册。音频和视频文件只在你的浏览器里解码和处理，不会上传到任何服务器。The Audio Converter (to MP3 / WAV) is free with no sign-up. Audio and video files are decoded and processed only in your browser and are never uploaded.