Video encoding and decoding methods, and video encoding equipment

Abstract

The patent refers to methods for encrypting and decrypting video, and video encryption devices. The video encoding method includes steps to identify available short-term reference image sets for (predicting the current image); generating information related to the number of short-term reference image sets included in a portion of the bitstream about the sequence parameter set; Generate DCLTA index information about the difference between the current index of the short-term reference image set and the index of the short-term reference image set, and generate information about the sign of the RPS DCLTA and the absolute value of the RPS delta. Generate a bit stream containing information related to the number of short-term reference image sets in a part of the bit stream about the sequence parameter set, delta index information, RPS DCLTA sign information, and RPS delta absolute value information.