Convert MP4 → MP3
Free online MP4 to MP3 converter. Fast, secure, works in your browser.
ここにファイルをドラッグ＆ドロップ
またはクリックして参照 — 最大 100.0 MB
使い方
ファイルをアップロード
ファイルをドラッグ＆ドロップするか、クリックして参照。最大 100 MB のファイルに対応。
設定を調整
品質、解像度、その他の設定をニーズに合わせて調整。
結果をダウンロード
変換されたファイルは即座に準備完了。ダウンロードをクリックして保存。
Understanding MP4 and MP3
What is MP4?
MP4 is the most popular video container format, supporting video, audio, subtitles, and metadata. It offers excellent compression with H.264/H.265 codecs.
Full name: MPEG-4 Part 14
Advantages
- Universal compatibility
- Excellent compression
- Supports subtitles
- Streaming-friendly
Limitations
- Lossy compression
- May require specific codecs
Best for: Web videos, social media, streaming, mobile devices
What is MP3?
MP3 is the most widely used audio format. It uses lossy compression to significantly reduce file sizes while maintaining good audio quality for most listeners.
Full name: MPEG Audio Layer III
Advantages
- Universal compatibility
- Small file size
- Good quality at high bitrates
- Metadata support
Limitations
- Lossy compression
- Quality loss at low bitrates
- No lossless option
Best for: Music distribution, podcasts, web audio, portable devices
よくある質問
Upload your MP4 file using the drag & drop area above, and VUREX will automatically convert it to MP3 format. Download your converted file instantly.
Yes, VUREX is completely free. No registration, no watermarks, no limits on file conversions.
Absolutely. Files are processed in your browser whenever possible. We never store your files on our servers.
You can upload files up to 100 MB. For most MP4 files, this is more than enough.
Currently, VUREX supports single file conversion. Batch conversion is coming soon.