Patent attributes
A method for delivering media from a server to a client device over a network is disclosed. An application running on the server generates a virtual 3D environment containing 3D models and sounds. The server checks the status of each 3D model or sound in a predetermined order, and then, only those 3D models and sounds which are not pre-stored in the client device will all be rendered by the server into a frame of 2D video stream with sound. The server then sends to the client device the frame and meta data of the 3D models and sounds which are pre-stored in the client device via the network. The client device uses the frame as a background for rendering the 3D models and sounds which are pre-stored in the client device so as to generate a mixed frame of video stream with sound for output.

