convert_to_chromecast.sh

gistfile1.txt

#! /bin/bash

# Configuration
ACCEPTED_CONTAINER_FORMATS=MPEG-4
ACCEPTED_VIDEO_FORMATS=AVC
ACCEPTED_VIDEO_PROFILES="[email protected] [email protected] [email protected]"
ACCEPTED_AUDIO_FORMATS=AAC
DEBUG=0

# Just code, not configurable
USAGE="Usage: $0 file1 file2 file3 ... fileN"

if [ "$#" == "0" ]; then
    echo "$USAGE"
    exit 1
fi

function transcode_file {
    FILE_NAME=$1

    if [ ${DEBUG} ]; then
        echo "Transcoding file: ${FILE_NAME}"
    fi
    
    if [ ! -e ${FILE_NAME} ]; then
        echo "File '${FILE_NAME}' does not exist, skipping."
        return
    fi
    
    CONTAINER_FORMAT=`mediainfo '--output=General;%Format%' ${FILE_NAME}`
    if [[ ${ACCEPTED_CONTAINER_FORMATS} =~ (^| )${CONTAINER_FORMAT}($| ) ]]; then
        PRESERVE_CONTAINER=1
    else
        PRESERVE_CONTAINER=0
    fi

    if [ ${DEBUG} ]; then
        echo "Running: mediainfo '--output=Video;%Format%' ${FILE_NAME}"
        echo "Getting:" `mediainfo '--output=Video;%Format%' ${FILE_NAME}`
    fi
    VIDEO_FORMAT=`mediainfo '--output=Video;%Format%' ${FILE_NAME}`
    if [[ ${ACCEPTED_VIDEO_FORMATS} =~ (^| )${VIDEO_FORMAT}($| ) ]]; then
        if [ ${VIDEO_FORMAT} == "AVC" ]; then
            VIDEO_PROFILE=`mediainfo --output='Video;%Codec_Profile%;%Codec profile%' ${FILE_NAME}`
            if [[ ${ACCEPTED_VIDEO_PROFILES} =~ (^| )${VIDEO_PROFILE}($| ) ]]; then
                PRESERVE_VIDEO=1
            else
                PRESERVE_VIDEO=0
            fi
        else
            PRESERVE_VIDEO=1
        fi
    fi

    AUDIO_FORMAT=`mediainfo '--output=Audio;%Format%' ${FILE_NAME}`
    if [[ ${ACCEPTED_AUDIO_FORMATS} =~ (^| )${AUDIO_FORMAT}($| ) ]]; then
        PRESERVE_AUDIO=1
    else
        PRESERVE_AUDIO=0
    fi

    if [ ${DEBUG} ]; then
        echo "PRESERVE_CONTAINER:" ${PRESERVE_CONTAINER} "."
        echo "PRESERVE_VIDEO:" ${PRESERVE_VIDEO} "."
        echo "PRESERVE_AUDIO:" ${PRESERVE_AUDIO} "."
    fi

    if [ ${PRESERVE_CONTAINER} -eq 1 ] && [ ${PRESERVE_VIDEO} -eq 1 ] && [ ${PRESERVE_AUDIO} -eq 1 ]; then
        # Nothing to be done, file is acceptable
        if [ ${DEBUG} ]; then
            echo "Already processed!"
        fi
        return
    fi
    
    OPTIONS="" #TODO: Make ffmpeg less noisy
    if [ x${PRESERVE_VIDEO} == x1 ]; then
        OPTIONS="${OPTIONS} -vcodec copy"
    fi

    if [ x${PRESERVE_AUDIO} == x1 ]; then
        OPTIONS="${OPTIONS} -acodec copy"
    fi

    if [ ${DEBUG} ]; then
        echo "Running: ffmpeg -i ${FILE_NAME} ${OPTIONS} ${FILE_NAME}.mp4"
    fi
    ffmpeg -i ${FILE_NAME} ${OPTIONS} ${FILE_NAME}.mp4

}


while (( "$#" )); do
    transcode_file $1
    shift
done