Video Conversion
Convert MKV to M4B Online — Free
Fast, free MKV to M4B converter. No registration required.
またはインポート元
200万以上のファイル変換
数千人のユーザーに信頼されています
安全な転送
HTTPS暗号化アップロード
プライバシー優先
処理後にファイルを自動削除
登録不要
すぐに変換を開始
どこでも動作
あらゆるブラウザ、あらゆるデバイス
変換方法
1
Upload your .mkv file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .m4b file when it's ready.
MKVとは？
MKV is an open-source container format that can hold unlimited video, audio, picture, or subtitle tracks. Popular for high-definition video content and anime.
形式の詳細
- 正式名称
- Matroska Video
- 拡張子
- .mkv
主な特徴
- Multiple audio tracks
- Subtitle support
- Chapter markers
- High quality
M4Bとは？
M4B is the MPEG-4 audiobook format used by Apple iTunes and many audiobook platforms. It supports chapter markers, bookmarking, and AAC compression for efficient audiobook delivery.
形式の詳細
- 正式名称
- MPEG-4 Audiobook
- 拡張子
- .m4b
主な特徴
- Chapter support
- Bookmark resume
- iTunes compatible
- AAC compression
MKVとM4Bの比較
| 特徴 | MKV | M4B |
|---|---|---|
| 正式名称 | Matroska Video | MPEG-4 Audiobook |
| 拡張子 | .mkv | .m4b |
| 最適な用途 | Multiple audio tracks | Chapter support |
よくある質問
The audio track is extracted from your MKV file without re-encoding when possible, preserving the original quality. If format conversion is needed, we use optimized settings to minimize any loss.
Free users can process files up to 100MB. Pro users can extract audio from videos up to 2GB with priority processing.
Audio extraction is fast — most files complete in under 30 seconds. Our servers handle the processing, so it works on any device.
Yes. You can adjust bitrate, sample rate, and channels before conversion. Default settings preserve the original audio quality from your MKV file.
Yes. Our converter runs entirely in your browser — no app needed. Upload your video, extract audio, and download on any device.