Convert MPEG-4 Audiobook (.m4b) to QuickTime Movie (.mov) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .m4b file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mov file when it's ready.
MOV (QuickTime Movie) is Apple's multimedia container, closely related to M4B since both are based on the ISO Base Media File Format. Converting M4B to MOV moves audiobook audio into QuickTime's container, which is the standard working format for Apple's professional tools (Final Cut Pro, Motion, Compressor). The conversion discards M4B's chapter track and bookmark functionality, producing a standard audio-in-video container.
Final Cut Pro and other Apple production tools work with MOV containers. If audiobook narration needs to be part of a video project — documentary, YouTube video, educational content — converting to MOV provides a seamless import. QuickTime Player on macOS also provides editing tools (trim, split) for MOV that are not available for M4B files.
FFmpeg stream-copies the AAC audio from the M4B container into a MOV container. Both formats use QuickTime-compatible atom structures, so this is primarily a container relabel with chapter track removal. The audio bitstream is unchanged. The operation is instant.
Zero quality change. The AAC audio is copied bit-for-bit. This is a container swap operation.
| Device | M4B | MOV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
M4B to MOV bridges audiobook content into Apple's professional production ecosystem. The conversion is lossless and instant, losing only chapter and bookmark metadata.
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ทุกเบราว์เซอร์ ทุกอุปกรณ์
| No |
| ฟีเจอร์ | M4B | MOV |
|---|---|---|
| ชื่อเต็ม | MPEG-4 Audiobook | Apple QuickTime Movie |
| นามสกุล | .m4b | .mov |
| เหมาะที่สุดสำหรับ | Chapter support | High quality |