Fully automated DVD ripping/archiving

Autorip.sh -- RIP a dvd with multiple subtitles and audio tracks into a single
Matroska file at a very high quality using H.264 encoding and deinterlacing

----------------------------------------------------------------------------

Copyright 2009 Andras Horvath (andras.horvath nospamat gmailcom) This program
is free software: you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software Foundation,
either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program.  If not, see <http://www.gnu.org/licenses/>.

----------------------------------------------------------------------------

To install dependencies (on debian/ubuntu):
$ sudo apt-get install mplayer mencoder mkvtoolnix x264 lsdvd grep sed

- Make sure there's enough space in the current directory as it's used as temp
  space.
- The DVD is read several times so you'll probably prefer to rip from an image.
  e.g. run:

  $ dd if=/dev/scd0 of=my.iso
  $ autorip.sh -d my.iso

  For a copy-protected, region-coded or otherwise screwed-up DVD, use dvdbackup
  (http://dvdbackup.sourceforge.net/) to create a directory hierarchy, then run
  autorip.sh against the top-level directory. For best results, the dvdcss or
  libdvdread4 package should be installed (on debian or ubuntu, run
  /usr/share/doc/libdvdread4/install-css.sh afterwards.)

- run with 'nice', preferably in 'screen'. Refer to the nice(1) and screen(1)
  manual pages for details.

- Run with '-h' for help and description of options.
  $ autorip.sh -h

TODO:
	- more error checking of arguments
	- automatically create image file if argument is a real DVD reader
	- see if ripping time can be optimized without cost of quality
	- add recoding support (not just DVDs but any video/subtitle combinations)