VDJ MP4

#!/bin/bash

cd /home/web/site-jtx/vdj
date >> liste_mp4.log

# Read VDJ list file
fichier=`head -n 1 liste_mp4.txt`
echo "$fichier" >> liste_mp4.log

# Remove first line for tomorrow
tail -n +2 liste_mp4.txt > tmp_mp4.txt
mv tmp_mp4.txt liste_mp4.txt
chmod 777 liste_mp4.txt

# Test bitrate
ffmpeg -i "$fichier" > bitrate.out 2>&1
bitrate=`gawk 'match($0, /bitrate: (.[^,]*)b\/s/, matches) {print matches[1]}' bitrate.out`
echo $bitrate > bitrate.out
bitrate_value=`gawk 'match($0, /^([0-9]+)/, matches) {print matches[1]}' bitrate.out`
bitrate_unit=`gawk 'match($0, /(k|M|G)$/, matches) {print matches[1]}' bitrate.out`
reencode="0"
if [ "$bitrate_unit" = "M" ]; then
    if [ "$bitrate_value" -ge 1 ]; then
        reencode="1"
    fi
else
    if [ "$bitrate_value" -ge 1700 ]; then
        reencode="1"
    fi
fi
rm bitrate.out

# Reencode if necessary
if [ "$reencode" = "1" ]; then
    echo "Encodage du fichier" >> liste_mp4.log
    ffmpeg -i "$fichier" -threads 0 -c:v libx264 -b:v 1.5M -r 25 -s 1280x720 -x264opts level=3 -pix_fmt yuv420p -c:a aac -strict experimental -b:a 192k -y vdj.mp4 > /dev/null 2>&1
else
    echo "Copie du fichier source" >> liste_mp4.log
    cp -f "$fichier" vdj.mp4
fi

# Generate thumbnail
ffmpeg -y -ss 10 -t 5 -i vdj.mp4 -vframes 1 vdj_mp4.png > /dev/null 2>&1

# Echo to log
echo "Script terminé avec succès" >> liste_mp4.log
echo "" >> liste_mp4.log