I am trying to burn a whole bunch of files onto DVDs.. about 25 files that are 180MB each. They are mpeg files and are PAL and need to be encoded to NTSC. Thing is.. when I used it last time, I was only able to get about 3 of these files on a DVD because when I converted it converted it to about 1 GB.. I want to make it a lot smaller.. to maybe fit about 5 of these files on a DVD at once... my question is... would this decrease the quality a lot from the 1GB format to a 800MB format? And are there any options I have to turn on/turn off to make the quality better?