Abstract: A method and system for switching media streams of a video in a client system. The media streams are made available to the client system by a content providing system. A first media stream received from the content providing system is played in a SHOW mode in the client system. A command is received from a control system to execute a procedure for deciding whether to switch from playing the first media stream to playing a second media stream which has a different media stream bandwidth than the first media stream. The executed procedure decides to make the switch. The switch is made to playing the second media stream in the SHOW mode as the second media stream is being received from the content providing system in response having been requested from the content providing system. The switching preserves content continuity of the video.

Abstract: A method for modeling and animating an object trajectory in three-dimensional (3D) space. The trajectory includes at least one course which represents a 3D model mesh. A course includes at least one segment which is a display unit of the 3D model mesh. A segment includes two 3D points. Multiple vertices are generated for a first 3D point of the segment to specify a plane such that a normal vector of the specified plane is parallel to a vector directed from the first 3D point of the segment to a second 3D point of the segment. The generated vertices are added to the 3D model mesh so that the generated vertices can be subsequently displayed as an extension of the 3D model mesh.