DocumentCode
336999
Title
A realtime software MPEG transcoder using a novel motion vector reuse and a SIMD optimization techniques
Author
Senda, Yuzo ; Harasaki, Hidenobu
Author_Institution
C&C Media Res. Labs., NEC Corp., Kawasaki, Japan
Volume
4
fYear
1999
fDate
15-19 Mar 1999
Firstpage
2359
Abstract
A realtime software MPEG transcoder has been developed. Novel motion vector reuse and SIMD optimization techniques are introduced to accelerate the transcoder without any quality degradation. Mean absolute error approximation criteria are employed in the reuse technique to refine scaled motion vectors. The developed transcoder on a Pentium II 266 MHz machine runs 2.5 times as fast as realtime, when scaling an MPEG-1 bitstream to half size
Keywords
data compression; optimisation; parallel architectures; real-time systems; video coding; video on demand; MPEG-1 bitstream; SIMD optimization techniques; mean absolute error approximation criteria; motion vector reuse; quality; realtime software MPEG transcoder; scaled motion vectors; Bit rate; Broadcasting; Costs; Decoding; Discrete cosine transforms; Encoding; Hardware; Multimedia communication; Software systems; Transcoding;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location
Phoenix, AZ
ISSN
1520-6149
Print_ISBN
0-7803-5041-3
Type
conf
DOI
10.1109/ICASSP.1999.758412
Filename
758412
Link To Document