Audio Conversion
Convert M4B to WMV Online — Free
Fast, free M4B to WMV converter. No registration required.
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How to Convert
1
Upload your .m4b 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 .wmv file when it's ready.
What is M4B?
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.
Format Details
- Full Name
- MPEG-4 Audiobook
- Extension
- .m4b
Key Features
- Chapter support
- Bookmark resume
- iTunes compatible
- AAC compression
What is WMV?
WMV is a video compression format developed by Microsoft. It's commonly used in Windows environments and for streaming media.
Format Details
- Full Name
- Windows Media Video
- Extension
- .wmv
Key Features
- Windows native
- DRM support
- Streaming optimized
- Good compression
M4B vs WMV
| Feature | M4B | WMV |
|---|---|---|
| Full Name | MPEG-4 Audiobook | Windows Media Video |
| Extension | .m4b | .wmv |
| Best For | Chapter support | Windows native |
Frequently Asked Questions
Yes. You can convert up to 5 files per day completely free, with no watermark or registration required.
Most files convert in under 30 seconds. Larger files (over 500MB) may take 1-3 minutes.
No. Our converter uses optimized encoding settings by default to preserve the original quality.
Free users can convert files up to 100MB. Pro users can convert files up to 2GB.
Yes. Our converter works in any modern web browser on any device.