ffmprovisr/scripts/check_video_framemd5.sh

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#!/usr/bin/env bash
SCRIPT=$(basename "${0}")
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VERSION='2017-04-17'
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AUTHOR='ffmprovisr'
RED='\033[1;31m'
BLUE='\033[1;34m'
NC='\033[0m'
if [[ ${OSTYPE} = "cygwin" ]] || [ ! $(which diff) ]; then
echo -e "${RED}Error: 'diff' is not installed by default. Please install 'diffutils' from Cygwin.${NC}"
exit 1
fi
_output_prompt(){
cat <<EOF
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Usage: ${SCRIPT} -h | -i <av_file> -m <md5_file>
EOF
exit 1
}
_output_help(){
cat <<EOF
Syntax:
${SCRIPT}
Prompts a short help message.
${SCRIPT} -h
This help.
${SCRIPT} -i <av_file> -m <md5_file>
Pass to the script the audio-visual file and the corresponding MD5
file to check.
Dependency:
ffmpeg
About:
Version: ${VERSION}
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Website: https://github.com/amiaopensource/ffmprovisr/blob/gh-pages/scripts/check_video_framemd5.sh
EOF
exit 0
}
unset input_file
unset input_hash
while getopts ":hi:m:" opt; do
case "${opt}" in
h) _output_help ;;
i) input_file=$OPTARG ;;
m) input_hash=$OPTARG ;;
:) echo -e "${RED}Error: option -${OPTARG} requires an argument${NC}" ; _output_prompt ;;
*) echo -e "${RED}Error: bad option -${OPTARG}${NC}" ; _output_prompt ;;
esac
done
[[ -z "${#}" || ! ${input_file} || ! ${input_hash} ]] && _output_prompt
echo -e "${BLUE}Please wait...${NC}"
unset md5_tmp
if [[ $OSTYPE = "cygwin" ]]; then
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md5_tmp="${USERPROFILE}/$(basename "${input_hash}").tmp"
else
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md5_tmp="${HOME}/$(basename "${input_hash}").tmp"
fi
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ffmpeg -i "${input_file}" -loglevel 0 -f framemd5 -an "${md5_tmp}"
[[ ! -f "${md5_tmp}" ]] && { echo -e "${RED}Error: '${input_file}' is not a valid audio-visual file.${NC}" ; _output_prompt ; }
unset old_file
unset tmp_file
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old_file=$(grep -v '^#' "${input_hash}")
tmp_file=$(grep -v '^#' "${md5_tmp}")
if [[ "${old_file}" = "${tmp_file}" ]]; then
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echo -e "${BLUE}'$(basename "${input_file}")' matches '$(basename "${input_hash}")'${NC}"
rm "${md5_tmp}"
else
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echo -e "${RED}The following differences were detected between '$(basename "${input_file}")' and '$(basename "${input_hash}")':${NC}"
diff "${input_hash}" "${md5_tmp}"
rm "${md5_tmp}"
fi