... and they don't even have the courtesy to acknowledge the fact that they are simply repackaging ffmpeg and charging an ARM and a LEG for the privilege.
You can confirm/discover this for yourself by selecting "Show Package Contents" from the Finder and browsing through the contained directories. Run the app called "ddv_decode" and you will see the following:
ffmpeg version 0.4.8, Copyright (c) 2000-2003 Fabrice Bellard
usage: ffmpeg [[options] -i input_file]... {[options] outfile}...
Hyper fast Audio and Video encoder
Main options:
-L show license
...
Since all this is is a GUI front end for a CLUI and DOESN'T have ANY configurable options you're better and cheaper off (1) using the ffmpeg application directly, (2) checking out one of the other projects at ffmpeg.sourceforge.net, or (3) trying an app called ffmpegX that actually uses ffmpeg effectively at a reasonable ($15) price rather than ripping you off.