A Lightweight Selective Video Encryption Using Motion Vectors and IPMs for H.264 Codec

Abstract

Selective video encryption is a technique of selectively choosing a part of the video bit stream for encryption. Such kind of encryption can impart good security and computational efficiency in the H.264 bit stream. In this paper, we propose a selective video encryption technique which uses the motion vectors and chrominance layer of each macro block in I frames for encryption. These two are important elements in the bit stream whose encryption shall reflect on the present GoP (Group of Pictures). The proposed technique is implemented in the JM 19.0 reference software under high profile condition. Different YUV sequences are used for the investigational evaluation of the proposed technique. Results are discussed according to the PSNR, bit rate, etc.