Default M4R bitrate is 192 kbps (transparent for music). You can override to 320 kbps (audiophile) or 96-128 kbps (voice / podcast / smaller file). The choice is exposed in the advanced options.
װעט איך פֿאַרלירן די אוודיאָ קװאַליטעט װען איך װײַז פֿון MKV צו M4R?
Silent gaps usually mean the MKV file had a multi-track audio layout and we picked the wrong stream. Use the advanced "audio stream" option to explicitly pick stream 0, 1, etc., or re-mux all streams to a multi-track M4R container if M4R supports it.
צי די אױסגעװײנטלעכע M4R שפּילן זיך אױף iPhone / Android / אוטאָפּיעס?
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MP3 plays everywhere. AAC / M4A plays on Apple and most Android. OGG / Opus needs a recent player on iOS. The advanced options expose a "device" preset that picks the M4R codec most likely to play on your target.