I choose flac, and the ui says its downloading flac but the output is not correct. its actually m4a. Why? [upl-image-preview uuid=ea525a1d-80a2-4b9d-b8b9-b5864898374f url=https://forum.dvdfab.cn/assets/files/2025-12-28/1766948003-12211-image.png alt={TEXT?}] [upl-image-preview uuid=134c464f-a174-476e-9a79-1f9ab4635901 url=https://forum.dvdfab.cn/assets/files/2025-12-28/1766948011-440154-image.png alt={TEXT?}]

downloading flac but the output is not correct (a mix of m4a and flac)

I choose flac, and the ui says its downloading flac but the output is not correct. its actually m4a. Why?