add script for audio

check_audio_framemd5.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+  SCRIPT=$(basename "${0}")
+ VERSION='2017-04-15'
+  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
+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: ${VERSION}
+  Website: https://github.com/amiaopensource/ffmprovisr/blob/gh-pages/check_framemd5.sh
+EOF
+    exit 0
+}
+
+unset input_file
+unset input_hash
+
+while getopts ":hi:m:" opt; do
+    case "${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 [[ $OSTYPE = "cygwin" ]]; then
+    md5_tmp=""${USERPROFILE}/$(basename ${input_hash}).tmp""
+else
+    md5_tmp="${HOME}/$(basename ${input_hash}).tmp"
+fi
+# Find audio frame size for hash calculation
+sample_rate=$(grep -v '^#' ${input_hash} | head -n 1 | tr -d ' ' | cut -d',' -f4)
+$(ffmpeg -i ${input_file} -loglevel 0 -filter_complex "asetnsamples=n='$sample_rate'" -f framemd5 -vn ${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
+unset sample_rate
+old_file=$(grep -v '^#' ${input_hash})
+tmp_file=$(grep -v '^#' ${md5_tmp})
+if [[ "${old_file}" = "${tmp_file}" ]]; then
+    echo -e "${BLUE}'$(basename ${input_file})' matches '$(basename ${input_hash})'${NC}"
+    rm "${md5_tmp}"
+else
+    echo -e "${RED}The following differences were detected between '$(basename ${input_file})' and '$(basename ${input_hash})':${NC}"
+    diff "${input_hash}" "${md5_tmp}"
+    rm "${md5_tmp}"
+fi

index.html

@@ -1201,7 +1201,7 @@ foreach ($file in $inputfiles) {
             <dt>-vn</dt><dd>ignores the video stream (video no)</dd>
             <dt><i>output_file</i></dt><dd>path, name and extension of the output file</dd>
           </dl>
-          <p>You may verify an MD5 checksum file created this way by using a <a href="check_framemd5.sh" target="_blank">Bash script</a>.</p>
+          <p>You may verify an MD5 checksum file created this way by using a <a href="check_audio_framemd5.sh" target="_blank">Bash script</a>.</p>
           <p class="link"></p>
         </div>
       </div>