#!/bin/bash
# script to convert an mkv to m4v

if [ "$1" -a "$2" ];
then

filename=`basename "$1" .mkv`
fps=`mkvinfo "$filename".mkv|grep "Default duration"|head -n 1|cut -d'(' -f2|cut -c 1-6`
#sfreq=`mkvinfo "$filename".mkv|grep "Sampling frequency"|head -n 1|cut -d':' -f2|cut -c 2-6`

mkvextract tracks "$filename".mkv 1:video.h264

ffmpeg -i "$filename".mkv -vn -acodec pcm_s16le -ac 2 audio.wav

normalize-audio audio.wav

#faac -c $sfreq audio.wav
neroAacEnc -br $2 -lc -if audio.wav -of audio.aac

MP4Box -fps $fps -add video.h264 -add audio.aac "$filename".m4v

if [ $? -eq 0 ]; then
rm audio.aac audio.wav video.h264
echo "All Done!"
fi

else
echo "Usage: mkv2m4v.sh {filename} {target audio bitrate (eg: 128000)}"
fi