DocumentCode
860181
Title
Accurate rate control method in transcoding
Author
Chen, L. ; Cheng, L.J. ; Yu, S.Y.
Author_Institution
Inst. of Image Commun. & Inf. Process., Shanghai Jiao Tong Univ., China
Volume
40
Issue
1
fYear
2004
Firstpage
16
Lastpage
18
Abstract
An accurate rate control method for transcoding is presented. A linear relationship between the number of bits generated from the quantised discrete cosine transform (DCT) coefficients and the number of nonzero DCT coefficients is used in this method. By estimating variation of average values of run-level codes at different bit rates, errors of model parameters are corrected. Good results compared to TM5 are reported.
Keywords
discrete cosine transforms; quantisation (signal); transform coding; video coding; MPEG-2 video; accurate rate control method; average values variation; compressed bitstream scaling; linear relationship; model parameters; nonzero numbers; number of bits generated; quantisation parameters; quantised discrete cosine transform coefficients; run-level codes; transcoding;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20040026
Filename
1260649
Link To Document