A software-based high-quality MPEG-2 encoder employing scene change detection and adaptive quantization

High-quality and processor-efficient implementation of an MPEG-2 AAC encoder

Presented here is MPEG-2 AAC LC Profile encoder software for an Intel Pentium III processor. MDCT and quantization processing are accelerated by the use of SIMD instructions. Psycho-acoustic analysis in the MDCT domain makes the use of FFTs unnecessary. Better sound quality is provided by greater efficiency in quantization processing and Huffman coding. All of this results in high-quality and p...

SAMPEG: a scene-adaptive parallel MPEG-2 software encoder

SmartJukebox: An Efficient and High-Quality MPEG-2 AAC Encoder

*Multimedia Research Laboratories This paper describes high-quality and processor-efficient software implementation of an MPEG-2 AAC LC Profile encoder utilized in “SmartJukebox,” music jukebox software. MDCT and quantization processing are accelerated by 21.3% and 19.0%, respectively, through the use of SIMD instructions. In addition, psycho-acoustic analysis in the MDCT domain makes the use o...

Rate-Distortion Optimal Adaptive Quantization and Coefficient Thresholding for MPEG Coding

This paper presents an MPEG-2 compatible adaptive quantization algorithm that leads to the optimal encoding of I-frames in the sense of maximizing PSNR. It integrates three key features into a single Lagrangian optimization model: adaptive quantization including quantizer-change overhead consideration, coefficient thresholding, and a new coefficient amplitude reduction technique. Our results sh...

Reduced Storage Transmission Buffer Designs for an Mpeg Video Coder

DESIGNS FOR AN MPEG VIDEO CODER Y S Saw J M Hannah P M Grant Electrical Engineering, University of Edinburgh, Scotland Abstract In MPEG video encoding, e cient bu ering and rate control is especially crucial for constant bit rate (CBR) applications such as non-ATM (Asynchronous Transfer Mode) channels and satellite communication channels. In a CBR environment, compressed video data, which is in...