#!/bin/sh

resample=TRUE
format=VCD
USAGE='any2mpeg [options] input.file [output.mpg]\n  -n Do not resample audio output\n  -f VCD|SVCD|DVD  Select output profile [VCD]\n'
export resample format USAGE

#set -- `getopt -s sh -o nf: -- $*`
#if [ $? != 0 ]
#then
#	echo ERROR: Invalid Syntax
#        printf "$USAGE"
#	exit 2
#fi
for i in $*
do
	case $i in
		-n)     resample=FALSE; shift;;
		-f)     format=$2; shift 2;;
		--)	shift; break;;
	esac
done

input=$1
export input

if [ -z "$input" ]; then
	echo ERROR: No Input File Specified [no default]
        printf "$USAGE"
        exit 2
fi

if [ -z "$2" ]; then
	output="$input.mpg"
else
	output="$2"
fi
export output

if [ "$format" = "DVD" ]; then
  FILT="-mpegopts format=dvd -vf scale=720:480,harddup -lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:acodec=ac3:abitrate=192:aspect=16/9"
  RATE=48800
elif [ "$format" = "SVCD" ]; then
  FILT="-mpegopts format=xsvcd -vf scale=480:480,harddup -lavcopts vcodec=mpeg2video:mbd=2:keyint=18:vrc_buf_size=917:vrc_minrate=600:vbitrate=2500:vrc_maxrate=2500:acodec=mp2:abitrate=224"
  RATE=44100
elif [ "$format" = "VCD" ]; then
  FILT="-mpegopts format=xvcd -vf scale=320:240,harddup -lavcopts vcodec=mpeg1video:keyint=18:vrc_buf_size=327:vrc_minrate=1152:vbitrate=1152:vrc_maxrate=1152:acodec=mp2:abitrate=224"
  RATE=44100
else
  echo ERROR: Invalid Output Format Profile [$format]
  printf "$USAGE"
  exit 2
fi
export FILT RATE

if [ "$resample" = "TRUE" ]; then
  FILT="$FILT -af lavcresample=$RATE"
fi

mencoder -oac lavc -ovc lavc -of mpeg -srate $RATE -ofps 30000/1001 $FILT -o "$output" "$input"