Before understanding the debinarizer , you must understand the P3D. In the Real Virtuality engine (the backbone of DayZ , ARMA, and VBS), the .p3d file format holds 3D model data. This includes everything from vertex positions and UV maps to named selections (like "door_handle" or "wheel_1") and geometry LODs (Levels of Detail).
When a mod author disappears and their source P3D files are lost, but their compiled, binarized mod lives on, a debinarizer is the only way to fix a broken door proxy or a misaligned scope rail. p3d debinarizer dayz