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Author Toan Nguyen Dinh ♦ JaeMyung Yoo ♦ Sungchan Park ♦ GueeSang Lee ♦ June-Young Chang ♦ Han-Jin Cho
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2007
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Filtering ♦ Motion estimation ♦ Bit rate ♦ Transcoding ♦ Video compression ♦ Decoding ♦ Discrete cosine transforms ♦ Spatial resolution ♦ Videoconference ♦ MPEG 4 Standard
Abstract Efficient downscaling in a transcoder is important when the output video should be converted to a lower resolution video. In this paper, we present a fast MPEG-4 simple profile (SP) to H.264 transcoder with reducing spatial resolution from CIF to QCIF video format. Based on frame image characteristics and motion information in MPEG-4 decoder, we limit motion modes, generate prediction motion vectors and build an adaptive search range for motion estimation in H.264 encoder. Simulation results show that our transcoder reduces transcoding time considerably while video quality is kept almost optimal.
Description Author affiliation: Chonnam Nat. Univ., Gwangju (Toan Nguyen Dinh; JaeMyung Yoo; Sungchan Park; GueeSang Lee; June-Young Chang; Han-Jin Cho)
ISBN 9780769529837
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2007-10-16
Publisher Place Japan
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 291.00 kB
Page Count 4
Starting Page 577
Ending Page 580


Source: IEEE Xplore Digital Library