1. A method of a multidimensional content providing system for providing a user with a multidimensional content including a 2D video section and a 3D video section, comprising steps of: (a) the multidimensional content providing system recognizing either piece of information on starting points and information on ranges of sections with respect to the 2D video section and the 3D video section, respectively; (b) the multidimensional content providing system acquiring a distorted image generated by playing the 3D video section through a 2D player, wherein frames included in the 3D image section are determined by referring to either piece of the information on starting points and the information on ranges of sections with respect to the 2D video section and the 3D video section, respectively; and (c) the multidimensional content providing system providing, or supporting to provide, a video content including (i) the 2D video section and (ii) a section acquired by applying a rendering process to the distorted image through a rendering engine.