namndev/Audio_Download_Convert.md

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Last active December 6, 2025 16:51

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How to split FLAC files by cue and convert to ALAC on Mac OS X

Raw

Audio_Download_Convert.md

FLAC

Install required packages

brew install cuetools flac ffmpeg shntool

Split flac file by cue

$ shnsplit -o flac -f file.cue file.flac

Download cuetag.sh from https://github.com/gumayunov/split-cue/blob/master/cuetag and fill meta-info for the resulting flac files

$ cuetag file.cue split-track*.flac

Convert flac files to alac

$ for i in *.flac; do ffmpeg -i "$i" -acodec alac "`basename "$i" .flac`.m4a"; done;

from https://coderwall.com/p/6ydyoq/how-to-split-flac-files-by-cue-and-convert-to-alac-on-mac-os-x

Download Youtube

Using yt-dlp

pip install yt-dlp

Using command

yt-dlp -x --audio-format mp3 --audio-quality 0 --embed-thumbnail --add-metadata -o "%(title)s.%(ext)s" "https://music.youtube.com/watch?v=s4e32Ny6csc"

Convert AAC

ffmpeg -i input.mp3 -vn -c:a libfdk_aac -b:a 192k -ar 44100 output.m4a

Or

ffmpeg -i input.mp3 -metadata title="New Video Title" -c:a libfdk_aac -vbr 4 -ar 48000 output.m4a

VBR 4 ≈ ~256 kbps

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