M4B to WEBM Converter

Convert M4B to WEBM online, for free.



Choose Files
  • From Device
  • From Dropbox
  • From Google Drive
  • From Url
Choose Files
Max file size 1GB. Upgrade to Pro Sign Up for more

Video Options
Choose a codec to encode or compress the video stream. To use the most common codec, select "Auto" (recommended). To convert without re-encoding video, choose "Copy" (not recommended).
Select a resolution for your video (width x height) in pixels.
Change the ratio between width and height, for example, 4:3 or 3:2
Change FPS (frames per second) of video
Video will be rotated clockwise.
Choose a file Browse
Upload a .srt or .ass subtitle file to be burned into your video.
Audio Options
Choose a codec to encode or compress the audio stream. To use the most common codec, select "Auto" (recommended). To convert without re-encoding audio, choose "Copy" (not recommended).
100% represents the original volume. To double the volume, increase it to 200%. To reduce volume by half, select 50%
Trim Settings
Specify the start position of trim (HH:MM:SS). Leave at 00:00:00 to disable.
Specify the end position of trim (HH:MM:SS). Leave at 00:00:00 to disable.





How to Convert M4B to WEBM?

  1. Click the “Choose Files” button to select your M4B files.
  2. Click the “Convert to WEBM” button to start the conversion.
  3. When the status change to “Done” click the “Download WEBM” button

Easy to Use

Simply upload your M4B files and click the convert button. You can also batch convert M4B to WEBM format.

Best Quality

We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).

Free & Secure

Our M4B to WEBM Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 2 hours.


What is an M4B (MPEG-4 Audio Layer) file?

MPEG-4 Audio Layer (M4B) is the file format that stores audiobooks and podcasts, primarily those that are available on iTunes. The cool thing about this file format is that, unlike MPEG-Audio Layer III (MP3), M4B can store digital bookmarks. This feature allows readers to pause and resume later, just like a physical bookmark in a printed book!

 

How to open an M4B file?

The default program for opening M4B files is iTunes. For cross-platform access, VLC media player is a very dependable option that works on Mac OS X and mobile.

 

On Windows, several options are available. They include Windows Media Player, MediaMonkey, Winamp, and Helium Music Manager.

 

Developed by: Apple Inc.

Initial Release: 1999

Useful links:

https://www.lifewire.com/what-is-m4b-format-2438562

https://www.lifewire.com/m4b-file-2621958

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