fish-shell snippets to convert between representations of lossless audio

audio.fish

function flac_to_m4a
    set flacs ./*.flac

    if test -z "$flacs"
        echo "No .flac files in current directory"
        false
    else
        for flac_path in $flacs
            set new_name (basename "$flac_path" .flac).m4a
            ffmpeg -i "$flac_path" -c:a alac -c:v copy "$new_name"
        end
        true
    end
end

function m4a_to_flac
    set m4as ./*.m4a

    if test -z "$m4as"
        echo "No .m4a files in current directory"
        false
    else
        for m4a_path in $m4as
            set new_name (basename "$m4a_path" .m4a).flac
            ffmpeg -i "$m4a_path" "$new_name"
        end
        true
    end
end

function wav_to_m4a
    set wavs ./*.wav

    if test -z "$wavs"
        echo "No .wav files in current directory"
        false
    else
        for wav_path in $wavs
            set new_name (basename "$wav_path" .wav).m4a
            ffmpeg -i "$wav_path" -acodec alac "$new_name"
        end
        true
    end
end