Fast & Easy M4B to FLAC Conversion – Preserve Every Sound

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.

Select a compression level between 0 and 12 to balance efficiency and speed. Higher levels provide better compression and smaller file sizes but take more time to process.