Abstract
Our objective is to enable a format transcoding between a heterogeneous compression format in real time mode and to enhance the compression ratio using characteristics of the compression frame. In this paper, we tried to transcode MPEG 2 digital contents having a low compression ratio into H.263 contents with a high compression ratio. After analyzing MPEG2 bit stream and H.263 bit stream of the same original video, we found that the number of intra coded macro blocks in MPEG2 data is much higher that the number of the intra coded blocks in H.263 data. In the process of P frame generation, an intra coded block is generated when a motion estimation value representing the similarity between the previous frame and the current frame does not meet a threshold. Especially the intra coded macro block has a great impact on the compression ratio. Hence we tried to minimize the number of intra coded macro blocks in transcoding the INTRA coded block into INTER coded block using the information about motion vectors surrounding the intra macro block in order to minimize the complexity of the motion estimation process. The experimental results show that the transcoding of MPEG2 into H.263 can be done in real time successfully.
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
References
Youn, J., Xun, J., Ming, S.: Fast Video Transcoding Architectures for Networked Multimedia Applications. In: IEEE International Symposium on Circuits and Systems, pp. 25–26 (2000)
Kang, E.S.: A Study on the Guided Search for Transcoding of MPEG2 P frame to H.263 P frame in a Compressed Domain. Department of Computing Graduate School Soongsil University, 1–15 (2001)
Zhijun, L., Georganas, N.D.: H.263 Video Transcoding for Spatial Resolution Downscaling. In: Proceedings of the International Conference on Information Technology: Coding and Computing, pp. 425–430 (2002)
Fung, K.-T., Siu, W.-C.: Low Complexity and High Quality Frame-Skipping Transcoder. In: IEEE International Symposium on Circuits and Systems, vol. 5, pp. 29–32 (2001)
Yang, J., Edward, J.: A MPEG4 simple profile transcoder for low data rate wireless applications. In: Proceedings of SPIE Visual Communications and Image Processing Part 1, pp. 112–123 (2002)
Kim, K.H., Park, D.S., Whang, J.S.: Compiler, pp. 96–112. Korean Broadcasting University Press (1998)
Huang, C.-M., Liu, R.-C., Chang, R.-L.: QoS Streaming Based on a Media Filtering System. In: IEEE International Conference on Parallel and Distributed Systems, pp. 661–666 (2001)
Acharya, S., Smith, B.C.: Compressed Domain Transcoding of MPEG. In: ICMCS, pp. 295-304 (1998)
Keesman, G., Hellinghuizen, R., Hoeksema, F., Heideman, G.: Transcoding MPEG bitstream. Signal Processing: Image Communication 8 (September 1996)
Shanableh, T., Ghanbari, M.: Heterogeneous video transcoding MPEG: 1,2 to H.263. In: International Packet Video Workshop, New York City, NY (April 1999)
Feamster, N., Wee, S.J.: An MPEG-2 to H.263 Transcoder. In: SPIE Voice, Video, and Data Communications Conference, Boston, MA (September 1999)
Werner, O.: Requantiazation for Transcoding of MPEG-2 Intraframes. IEEE transaction on image processing 8(2) (February 1999)
Bjork, N., Christopoulos, C.: Transcoder architecture for video coding. IEEE Trans. Consumer Electron. 44, 88-98 (1998)
Shen, B., Sethi, I.K., Bhaskaran, V.: Adaptive motion vector resampling for compressed video down-scaling. In: Proc. Of IEEE Int. Conf. On Image Processing (October 1997)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Kang, E., Hong, M., Lim, Y., Mun, Y., Ahn, S. (2005). A Guided Search Method for Real Time Transcoding a MPEG2 P Frame into H.263 P Frame in a Compressed Domain. In: Gervasi, O., et al. Computational Science and Its Applications – ICCSA 2005. ICCSA 2005. Lecture Notes in Computer Science, vol 3480. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11424758_26
Download citation
DOI: https://doi.org/10.1007/11424758_26
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-25860-5
Online ISBN: 978-3-540-32043-2
eBook Packages: Computer ScienceComputer Science (R0)