yt-dlp configuration for downloading music with metadata and cover art

album.conf

# Download in m4a format
--format="ba"
--extract-audio
--audio-format m4a

# Continue downloading if the download failed previously
--continue
--no-overwrites

# Set track number, album name, and artist name metadata tags
--add-metadata
--parse-metadata "%(playlist_index)s:%(track_number)s"
# Add cover art
--embed-thumbnail
--convert-thumbnails jpg

# Save file to ALBUM/TRACK NAME
-o "%(album)s/%(playlist_index)s %(title)s.%(ext)s"

convert-album-art.sh

#!/usr/bin/env nix-shell
#!nix-shell -p bash imagemagick exiftool -i bash

convert_album_art() {
    file=$1
    echo 
    echo "Processing file: $file"

    # Extract the embedded album art
    album_art=$(mktemp)
    exiftool -b -CoverArt "$file" > "$album_art"

    # Check if album art exists
    if [ -n "$album_art" ]; then
        echo "Album art found in $file, copied to $album_art"

        # Determine the file extension of the album art
        file_ext=$(exiftool -FileType "$album_art" | awk -F': ' '{print $2}' | tr '[:upper:]' '[:lower:]')

        echo "album art file type is $file_ext"

        # Convert the album art to JPEG format
        convert_cmd="magick '$album_art' '${file%.m4a}.jpg'"
        echo "> $convert_cmd"
        eval "$convert_cmd"
        echo "Album art converted to JPEG format: ${file%.m4a}.jpg"

        # Update the embedded album art with the new JPEG image
        exiftool -overwrite_original -CoverArt "${file%.m4a}.jpg" -all:image "$file"
        echo "Album art updated in $file"
        rm "${file%.m4a}.jpg"
    else
        echo "No album art found in $file"
    fi
}

if [[ -f $1 ]]; then
    # If the 1st arg is a file, convert it
    convert_album_art "$1"
else
    # Iterate through all M4A files in the current directory
    for file in *.m4a; do
        convert_album_art "$file"
    done
fi

single.conf

# Download in m4a format
--format="ba[ext=m4a]"

# Set track number, album name, and artist name metadata tags
--add-metadata
--embed-thumbnail

# Save file to TRACK NAME
-o "%(title)s.%(ext)s"