DocumentCode
2965400
Title
Real-time transcoding of MPEG-2 video bit streams
Author
Tudor, P.N. ; Werner, O.H.
Author_Institution
BBC, UK
fYear
1997
fDate
12-16 Sep 1997
Firstpage
296
Lastpage
301
Abstract
A method for real-time transcoding of MPEG-2 video bit streams is presented that can be applied at different levels of complexity. The proposed method has been developed in the ACTS ATLANTIC project. It is based on the following elements: (1) reuse of motion vectors and coding mode decisions carried in the input bit stream. (2) Modelling of the impairments already present in the input. (3) Use of bit rate statistics from the input bit stream. Experimental results confirm that high picture quality can be maintained. Furthermore, the proposed elements and transcoding algorithms are not limited to MPEG-2 and can be extended to a generic transcoding method suitable for the common standards JPEG, H.263, MPEG-1 and MPEG-2 alike
Keywords
computational complexity; ACTS ATLANTIC project; H.263; JPEG; MPEG-1; MPEG-2 video bit streams; bit rate statistics; coding mode decisions; complexity; impairments; input bit stream; motion vectors reuse; picture quality; real-time transcoding;
fLanguage
English
Publisher
iet
Conference_Titel
Broadcasting Convention, 1997. International
Conference_Location
Amsterdam
ISSN
0537-9989
Print_ISBN
0-85296-694-6
Type
conf
DOI
10.1049/cp:19971286
Filename
626835
Link To Document