If you are a fan of classic Grand Theft Auto modding—specifically for —you have likely encountered the need to convert 3D models. While OBJ is one of the most universal 3D file formats in the world, the RenderWare engine used by classic GTA games requires the DFF (Binary Model File) format.
Use the "Export DFF" button within the script interface. This tool is particularly good at generating "Collision" (COL) files simultaneously. Common Issues & Troubleshooting convert obj to dff
This is often caused by a vertex count that is too high for the old RenderWare engine. Try simplifying your mesh (Decimate) to reduce the polygon count. If you are a fan of classic Grand