Useful FFMPEG Audio bash functions

ffmpeg-audio-helpers.sh

function flactoaiff() {
        if [[ $1 != *.flac ]]; then
                echo "Please provide a FLAC-file"
                return 1
        fi
        newFilePath="${1/%.flac/.aiff}"
        ffmpeg -y -nostdin -i $1 -write_id3v2 1 -c:v copy $newFilePath
}

function downsample() {
        if [[ -z "$1" ]]; then
                echo "Please provide an audio-file"
                return 1
        fi
        if ! [[ "$2" =~ ^-?[0-9]+$ ]]; then
                echo "Please provide a valid sample rate"
                return 1
        fi
        filePathWithoutExtension="${1%.*}"
        fileExtension="${1##*.}"
        newFilePath="${filePathWithoutExtension}-downsampled.${fileExtension}"
        ffmpeg -y -nostdin -i "${1}" -ar $2 -write_id3v2 1 -c:v copy "${newFilePath}"
}