This used to be my forte. Nero DVD decrypter, shrink, all of it. Just a huge pain in the ass. I'm all streaming from my WD media player now....but anyhow... People swear by NERO because it has a "burn data disc" option.....so if your burning mkv, avi, or whatever it doesn't matter it just burns it. It also has a burn image option if you're making ISO files.