VR code stream protection method and system based on network coding

The invention discloses a VR code stream protection method and system based on network coding, and relates to the technical field of video coding. The method is technically characterized by comprising the following steps of: introducing selective scrambling in a process of carrying out compression coding on an uncoded VR video stream so as to protect a VR code stream; and forming a scrambled file in the selective scrambling process, and performing descrambling playing on the VR terminal according to the scrambled file. According to the method, key information generated in the compression encoding process is encrypted, encrypted data are greatly reduced, the chaos characteristic is expanded from time to space, it is guaranteed that a transmitted video is more difficult to be broken by an attacker, meanwhile, compression efficiency is improved, real-time performance is good, the safety index is high, and the method conforms to the characteristics of VR video transmission; according to the method and the device,