Not once you might have experienced the sad fact, that when you convert your movies or DVDs for backup purposes, you ended with a movie filesize under the size of the CD, or even worse, oversized. This even happened to you when you used similar calculator software. A lot of similar software out there suffers from several bugs that lead to innacurate calculations. It's time to forget about that, because now you can use divXTool to avoid all this. Enter the length of the movie and filesize you want to have, and this software will calculate the settings you must input into your compression codecs, to achieve the exact filesize. This software is the result of testing with over 200 various movie files. The results are exact and accurate all the time. You may believe that the technology behind this software is a secret. You will be amazed to find out, that once you order this software, you will also receive the complete soucercode for this. You can look inside to see how it works, or if you are a programmer, you can modify it to fit your needs.