オーディオブックをお持ちですが、それは .M4B ファイルであり、iTunes または Apple Books 内でのみ動作すると思われます。お気に入りのポッドキャスト アプリにロードすることも、車の中で再生することもできず、Android スマートフォンではそれをどう扱えばよいのかわかりません。 M4B は Apple のオーディオブック形式であり、これを MP3 に変換すると、実質的にあらゆるデバイスで書籍を再生できるようになります。
M4Bファイルとは何ですか?
M4B is an MPEG-4 audio file, the same family as M4A, but designated for audiobooks. It supports chapter markers and remembering your place, which is why Apple uses it. The catch is that support outside the Apple ecosystem is patchy, so on most other players and apps the file simply won't open.
MP3, by contrast, plays on every phone, car stereo, smart speaker, and MP3 player ever made — so converting is the simplest way to take your audiobook with you.
How to convert M4B to MP3
Open the M4B to MP3 converter, upload your audiobook file, choose MP3, and download. The full audio is preserved. Because audiobooks are long, the file can be large — see the note below on size limits.
What happens to chapters?
MP3 does not carry M4B's chapter markers, so the result is one continuous audio file. Many audiobook and podcast apps still let you bookmark and resume MP3s, and you can split a long book into parts if you prefer smaller files to move between devices.
オーディオブックを変換する理由
Play anywhere
Any phone, car, speaker, or MP3 player — no Apple device required.
Use any app
実際に気に入ったポッドキャストまたはオーディオブック アプリに書籍をロードします。
Back it up
MP3 is the most durable, universally-supported format for archiving a library.
DRM に関する注意事項
This converts standard, DRM-free M4B files — for example audiobooks you created or downloaded without copy protection. Audiobooks with DRM (some store purchases) are encrypted and cannot be converted. Always convert only content you own and are allowed to format-shift.
結論
M4B keeps audiobooks tied to Apple; MP3 sets them free. Convert to MP3 to listen on any device or app, and split long books into parts if that suits your listening. Keep the original M4B if you want to preserve chapter markers for Apple playback.
Convert your audiobook
Free online M4B to MP3 converter. Take your audiobooks anywhere — no iTunes, no watermark.
