100% On-Device Processing
Convert Your M4B Audiobooks to MKV Instantly Offline
Convert your files easily from m4b to mkv with our fast and reliable file converter.
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Settings
Video Settings
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).
Audio Settings
Select a codec to encode or compress the audio stream. The "Auto" option is recommended as it uses the most common codec. Alternatively, you can choose "Copy" to avoid re-encoding the audio, though this is not advised.
Trim Settings
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On-Device
Universal m4b to mkv converter
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Affordable m4b to mkv converter solution