History of reverse engineering LiViD project was the first major effort OMS was their DVD player project dxr2 project jumpstarted work, more legally sound sam and walken reverse engineered subtitles in 2000 dent's libifo libifo work all based on offsets into IFO files NAV parser from vobdump by Eric Smith dent, sam, walken's work used by many Windows DivX rippers