get_ac_audio.sh

#!/bin/bash
set -e
if [ $# -lt 1 ]; then
    echo "Usage $0 <recording ID>"
    exit 1
fi
BASEDIR=$PWD
ID="$1"
TMP=$ID/tmp
if [ -z "$OUTDIR" ]; then
    OUTDIR=/tmp/ac_output
fi
if [ -z "$FFMPEG_BIN" ]; then
    FFMPEG_BIN=ffmpeg
fi
if [ -z "$FFPROBE_BIN" ]; then
    FFPROBE_BIN=ffprobe
fi
mkdir -p $OUTDIR
OUTPUT_FILE="$OUTDIR/$ID.mp3"
cd $OUTDIR
rm -rf $ID
mkdir -p $TMP
COOKIE=`curl -I "$AC_ENDPOINT/api/xml?action=login&login=$AC_USERNAME&password=$AC_PASSWD" | grep "Set-Cookie:" | awk -F " " '{print $2}'`
if [ ! -r $ID.zip ]; then
    curl -q -b "$COOKIE" "$AC_ENDPOINT/$ID/output/$ID.zip?download=zip" > $ID.zip
fi

unzip -o -d $TMP $ID.zip

if ls $TMP/*.mp3 > /dev/null 2>&1; then
   VOIP=($(ls $TMP/*.mp3 | sort --version-sort -f))
   echo 'At least 1 MP3 audio file is already available. Even if there are several - grabbing the first one to use as recording audio'
   mv ${VOIP[0]} $OUTPUT_FILE
   exit 0;
else
    ITEMS=(cameraVoip*.flv cameraVoip*.mp4 ftvoice*.flv ftstage*.flv)
    for i in "${!ITEMS[@]}"; do
        if ls $TMP/${ITEMS[$i]} > /dev/null 2>&1; then
            LIST=($(ls $TMP/${ITEMS[$i]} | sort --version-sort -f))
        else
            echo "NOTICE: No items of type ${ITEMS[$i]} found. Skipping"
            continue
        fi
        for j in "${!LIST[@]}"; do
            if $FFPROBE_BIN -v error -show_entries stream=codec_type ${LIST[$j]} | grep -m1 -q audio; then
                VOIP=($(ls $TMP/${ITEMS[$i]} | sort --version-sort -f))
                break
            fi
        done
    done
fi

if [ -z "$VOIP" ]; then
    echo "ERR: $ID.zip contains no cameraVoip*.flv/cameraVoip*.mp4/ftvoice*.flv/ftstage*.flv files. Exiting:("
    exit 2
fi

rm -f $ID.list
for i in "${!VOIP[@]}"; do
    if $FFPROBE_BIN -v error -show_entries stream=codec_type ${VOIP[$i]} | grep -m1 -q audio; then
        FILE=${VOIP[$i]}
        EXTENSION=${FILE#*.}
        FILENAME=`basename "${FILE%%.*}" .$EXTENSION`

        if [ $EXTENSION != 'mp4' ]; then
            $FFMPEG_BIN -nostdin -i "${VOIP[$i]}" -y $ID/$FILENAME.mp3
            EXTENSION=mp3
        else
            cp ${VOIP[$i]} $ID/
        fi
        echo "$OUTDIR/$ID/$FILENAME.$EXTENSION" >> $ID.list;
    fi
done

if [ ! -s $ID.list ]; then
    echo "ERR: No audio files found. Exiting."
    exit 3
fi

FILTER_COMPLEX=`$BASEDIR/generate_audio_manifest.rb $ID.list`
ID_LIST=`sed 's@^@-i @g' $ID.list | xargs`

$FFMPEG_BIN -nostdin $ID_LIST -filter_complex "$FILTER_COMPLEX" -y $OUTPUT_FILE
if [ ! -r $OUTPUT_FILE ]; then
    echo "ERR: Failed to generate $OUTPUT_FILE. Exiting."
    exit 4
fi

if ! $FFPROBE_BIN -v error -show_entries stream=codec_type $OUTPUT_FILE | grep -m1 -q audio; then
    echo "ERR: Failed to detect audio on $OUTPUT_FILE. Exiting."
    exit 5
fi

EDIT_XML="$TMP/edit.xml"
if [ -r $EDIT_XML ]; then
    FILTER_COMPLEX=`$BASEDIR/generate_edit_manifest.rb $EDIT_XML`
    if [ -z "$FILTER_COMPLEX" ]; then
       echo "ERR: Failed to generate filter_complex"
       exit 6
    fi
    EDITED_OUTPUT_FILE="$OUTDIR/$ID.edited.mp3"
    $FFMPEG_BIN -nostdin -i $OUTPUT_FILE -filter_complex "$FILTER_COMPLEX" -map [outa] -y $EDITED_OUTPUT_FILE
    if [ ! -r $EDITED_OUTPUT_FILE ]; then
        echo "ERR: Failed to generate $EDITED_OUTPUT_FILE. Exiting."
        exit 7
    fi

    if ! $FFPROBE_BIN -v error -show_entries stream=codec_type $EDITED_OUTPUT_FILE | grep -m1 -q audio; then
        echo "ERR: Failed to detect audio on $EDITED_OUTPUT_FILE. Exiting."
        exit 8
    fi

    mv -f $EDITED_OUTPUT_FILE $OUTPUT_FILE
fi

echo "Final output saved to $OUTPUT_FILE"