chromecast-movies-convert.sh

# convert video files in directory for chromecast classic
# if the existing video or audio format is not playable,
# the streams are converted to h.264 and aac

## make sure output is mp4 container or missing timestamps in avi (!) are a problem

SEARCHPATH="/home/simon/nas/movies/"
MOVIEREGEX=".*\.(mkv|avi|mp4)$"
BACKUP="/home/simon/backup-movies/"

readarray -d $'\0' movies < <(find "${SEARCHPATH}" -regextype egrep -iregex "${MOVIEREGEX}" -print0)

for movie in "${movies[@]}"; do
    echo "checking ${movie}"
    info=`ffprobe "${movie}" 2>&1`
    videoC=`echo "${info}" | egrep -Eo Stream.*Video.* | grep -c h264`
    audioC=`echo ${info} | egrep -Eo Stream.*Audio.* | grep -Ec "(aac|mp3|ac3)"`
    if [ "${videoC}" == "0" ] || [ "${audioC}" == "0" ]; then
        echo "converting ${movie}, video ok: ${videoC}, audio ok: ${audioC}"
        extension="${movie##*.}"
        convertedmovie="${movie}.converted.mp4"
        if [ "${videoC}" == "0" ] && [ "${audioC}" == "0" ]; then
            time ffmpeg -nostdin -loglevel quiet -i "$movie" -c:v libx264 -preset slow -c:a aac "${convertedmovie}"
        elif [ "${videoC}" == "0" ]; then
            time ffmpeg -nostdin -loglevel quiet -i "$movie" -c:v libx264 -preset slow -c:a copy "${convertedmovie}"
        elif [ "${audioC}" == "0" ]; then
            time ffmpeg -nostdin -loglevel quiet -i "$movie" -c:v copy -preset slow -c:a aac "${convertedmovie}"
        fi
        status=$?
        if [ $status -eq 0 ]; then
            touch -r "$movie" "$convertedmovie"
            moviefile=${movie##*/}
            mv "$movie" "${BACKUP}${moviefile}"
            status=$?
            if [ $status -eq 0 ]; then
                mv "${convertedmovie}" "${movie}"
            else
                echo "error moving file to backup; did not overwrite on nas"
            fi
        else
            echo "error"
            if test -f "$convertedmovie"; then
                rm "${convertedmovie}"
            fi
        fi
    fi
done