What is .mtl?

The .mtl file extension stands for Material Template Library. It is a file format that stores material information for 3D models. This information includes parameters such as color, specular, transparency, and texture maps, among others.

The .mtl file is usually accompanied by an OBJ file, which contains the geometry of the 3D model. The two files work together to provide a complete 3D model with the correct materials applied.

The .mtl file can be created using 3D modeling software such as Blender, Maya, or 3ds Max. These files are often used in 3D printing, game development, and animation projects.

Overall, the .mtl file plays a crucial role in accurately rendering 3D models with appropriate colors, textures, and other material properties.