Default 192 kbps for lossy M4A; pass-through for lossless M4A. Override to 320 kbps for audiophile or 96 kbps for voice / podcast. The choice trades file size against audible fidelity at very low bitrates.
װעט דאָס אַרײַנשטעלן פֿון Opus צו M4A פֿאַרגרעסערן מײַן אויטאָמאַטישע קוואַליטעט?