#!/bin/bash

#
# 3gp2mpg4
#
# Edited by: Ivo Marino <eim@tiscali.it>
# Last modified: Mon, 08 Aug 2005 12:02:15 PM +0200 
#
# This script requires mencoder, ffmpeg.
#
#   ffmpeg -i vincenzo-sanpei.3gp -acodec mp2 -ar 22050 -f wav vincenzo-sanpei.mp2
#   mencoder -audiofile vincenzo-sanpei.mp2 -o vincenzo-sanpei.mpg -oac copy -ovc lavc -lavcopts vcodec=msmpeg4v2 vincenzo-sanpei.3gp
#   infos on: http://julian.coccia.com/blog/index.php?p=66&more=1
#
# List of support output formats: mencoder -ovc help
#

#
# main
#
echo -e "`basename $0`, 1.0\n"

if [ "$1" ]
then

    for ARG in "$@"
    do

        if [ -f "$ARG" ]
        then

            BASE_FILE_NAME=`echo $ARG |sed -e "s/.3gp//g"`

            echo -n "  Extracting audio from $1... "
            ffmpeg -i $ARG -acodec mp2 -ar 22050 -f wav $BASE_FILE_NAME.mp2 2>&-
            echo "done."

            echo -n "  Converting and merging audio from $ARG to $BASE_FILE_NAME.mpg... "
            mencoder -quiet -audiofile $BASE_FILE_NAME.mp2 -o $BASE_FILE_NAME.mpg -oac copy -ovc lavc -lavcopts vcodec=msmpeg4v2 $ARG
            echo "done."

            echo -n "  Cleaning up... "
            rm $BASE_FILE_NAME.mp2
            mv $ARG /tmp
            echo "done."

        else

            echo "Error: File does not exist."
            exit 1
        fi

    done

else
    cat <<EOT
Usage: `basename $0` [3GP FILE]
Convert a 3GP video file to DivX 4 AVI.

Example:

  % `basename $0` summer_sunset.3gp

Report bugs to Ivo Marino <eim@tiscali.it>
EOT
    exit
fi