Program:	burn_a_dvd.py

Authors:	Paul Hick <pphick@ucsd.edu>
		Austin Duncan <aduncan@ucsd.edu>

Purpose:	A script that will burn data onto a
		-R/-RW DVD.

Date:		4/6/03

  Program Flow:
    /home/soft/smei/gen/python/burn_a_dvd.py -> /software/dvdBurn/burn_a_dvd.py

      /software/dvdBurn/cdrecord-wrapper.sh

        /usr/bin/cdrecord-ProDVD -> /software/dvdBurn/cdrecord-prodvd-2.0.1-i586-pc-linux-gnu

    Explanation:
      The cdrecord-ProDVD program can only run with a key.  The key is contained in cdrecord-
      wrapper.sh.  The problem with this is that the wrapper program is user friendly, so that
      is why burn_a_cd.py is called to run the wrapper program.

  Calling Procedure:

    burn_a_dvd.py directory

      This call, makes a temporary image file of what is in the directory.  That image is then
      burned onto the dvd.  After that, the temporary image file is erased.


  Additional Information:
    (1)  This program can only burn -R/-RW DVDs.  The only way to burn +R/+RW DVDs is to hack
         the kernel and install other software as described at:

                           http://fy.chalmers.se/~appro/linux/DVD+RW/

    (2)  Do not call burn_a_dvd.py to erase a dvd.  In order to erase a dvd, the wrapper program
         needs to be called, like the following:

           cdrecord-wrapperer.sh dev=0,0,0 -v blank=all

             This call will erase the dvd that is on dev, 0,0,0.  There are different types of
             blanking options, which are documented by cdrecord-prodvd.