An accurate rate control of MPEG video by rate-codewords modeling

Author

Kim, Tae-yong ; Kim, Jae-kyoon

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

Volume

2

fYear

1997

fDate

9-12 Jun 1997

Firstpage

1261

Abstract

In some MPEG video coding, it is important to keep the number of generated bits as close as possible to a target bitrate, particularly for editing and recording. We define the non-zero quantized AC coefficients (NZC) of the discrete cosine transform (DCT), i.e. the number of AC codewords, as a new activity measure. From the close relationship between the bitrate and the NZC, we propose a new bitrate estimation and an accurate control scheme to meet a given bit budget. Some simulation results showing the bitrate control accuracy are presented

Keywords

adaptive signal processing; discrete cosine transforms; quantisation (signal); simulation; variable rate codes; video coding; AC codewords; DCT; MPEG video coding; accurate rate control; activity measure; adaptive bitrate control algorithm; bitrate control accuracy; bitrate estimation; nonzero quantized AC coefficients; rate-codewords modeling; simulation results; slice target bit allocation; target bitrate; Bit rate; Discrete cosine transforms; Ear; Entropy; Predictive models; Quantization; Size control; Streaming media; Video coding; Video recording;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on

Print_ISBN

0-7803-3583-X

Type

conf

DOI

10.1109/ISCAS.1997.622064

Filename

622064