Convert scn to x3d

What is the difference between .scn and .x3d?

Description: The scn file type is a 3D scene file created by Softimage XSI, a 3D animation and creative content authoring application. It stores a 3D scene that includes objects, materials, textures, cameras, lights, and other scene elements.; X3D (Extensible 3D) is a royalty-free open standard file format used to represent 3D computer graphics. It is used to store and interchange 3D model data, including surface geometry, color, animation, and metadata. X3D files are built on the XML standard, and can be viewed and edited with a variety of 3D modeling programs.