Low power losssless compression of real time MPEG4 video encoding and decoding using VHDL and MATLAB
Aswathy Prasad, K. S. Gokul Krishnan, Karthika, Parvathy, Rajesh Kannan Megalingam · 2009
This paper presents a simple model of complex real time MPEG-4 video encoding and decoding using simple techniques in VHDL and MATLAB to provide reasonable compression while using only less power and resources on FPGA. This implementation works on low power and less number of clock cycles. The basic video codec module consists of a video encoder and a decoder. The encoder module consists of blocks for temporal modeling, spatial modeling and entropy encoding. Temporal block has a difference block whereas spatial block consists of 2D DCT, quantizer and a 2D IDCT. Sample frames of real time video has been processed using the codec module resulting in an average compression of 64.6% It can be applied in areas where low bit rate, high quality video is required. The first 5 sections in this paper represents the concepts and theories used, section 6 onwards represents the actual implementation of the module.