1. A 3-dimensional (3D) video communication method, comprising: obtaining video image data of a scene, wherein: the video image data comprises at least one depth image and at least two color images; the video image data is collected by at least one image collecting apparatus capable of outputting depth information of the scene and at least one image collecting apparatus capable of outputting color/grayscale video information of the scene, or collected by at least one image collecting apparatus capable of outputting both depth information and color/grayscale video information of the scene; encoding the video image data to obtain encoded video image data; and sending the encoded video image data.