audio + picture -> youtube upload script

youtune.sh

#! /bin/sh

error() {
    echo >&2 "$1"
    exit 1
}

required() {
    command -v "$1" >/dev/null 2>&1 || error "$1 required but not installed; quitting"
}

required "ffmpeg"
required "youtube-upload"

while getopts ":a:d:i:t:" opt; do
    case $opt in
        a)
            ALBUM=$OPTARG
            ;;
        d)
            DESCR=$OPTARG
            ;;
        i)
            IMAGE=$OPTARG
            ;;
        t)
            TAGS=$OPTARG
            ;;
        \?)
            error "Invalid option -$OPTARG"
            ;;
    esac
done

shift $((OPTIND - 1))

if [ -z "$ALBUM" ] || [ ! -f "$IMAGE" ] || [ $# -eq 0 ]; then
    error "Usage: $0 -a ALBUM-NAME -i IMAGE-FILE [-d DESCRIPTION] [-t TAGS] AUDIO-FILES..."
fi

[ ! -z "$DESCR" ] && DESCR="$DESCR\n"
[ ! -z "$TAGS" ] && TAGS=", $TAGS"

process() {
    echo -n "Uploading $(basename "$1")..."
    local md="$(ffmpeg -i "$1" -f ffmetadata 2>/dev/null -)"
    [ -z "$md" ] && return 1
    local artist="$(echo "$md" | grep -i artist | cut -d= -f2)"
    local title="$(echo "$md" | grep -i title | cut -d= -f2)"
    [ -z "$title" ] && return 1 
    [ "${1##*.}" = "flac" ] && local acodec="-c:a libmp3lame -q:a 0" || local acodec="-c:a copy"
    ffmpeg -y -loop 1 -r 5 -i "$IMAGE" -i "$1" -shortest -c:v libx264 -preset ultrafast -tune stillimage -pix_fmt yuv420p $acodec "$2" 2>/dev/null || return 1
    youtube-upload --title="$ALBUM - $title" --description="${DESCR}Composer: $artist" --category=Gaming --location="=" --tags="OST, soundtrack, $artist, $ALBUM, $title$TAGS" "$2" >/dev/null 2>&1 || return 1
    echo "OK"
}

trap "exit 1" SIGINT

STATUS=0
for file; do
    tempfile="/tmp/ytn_$$.mkv"
    process "$file" "$tempfile" || { STATUS=1; echo "failed"; }
    rm $tempfile
done
exit $STATUS