Bit-rate control of transcoder considering the cativity and direction of mption vector 


Vol. 28,  No. 12, pp. 1209-1216, Dec.  2003


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  Abstract

The transcoding is needed to modify the dit rate of the video bitstream in accordance with the bandwidth of a variety of channels in order to provide users with a realtime multimedia service and more stable and credible VOD(Video On Demand) service on various wire/wireless network. This paper suggests how to guarantee the video quality in the transcoding process, taking the activity and direction of the macroblock into consideration, thereby reducing the calculation. The threshold of the macroblock's activity and direction is applicable to the different videos, with the DCT coefficients from the intermediate data in the decoding process. Moreover, the suggested video transcoding algorism enables us to maintain the proper video quality and reduce the calculation through the video bit rate change experiment in H.263 environment.

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  Cite this article

[IEEE Style]

S. Koo, H. Jang, C. Hwang, "Bit-rate control of transcoder considering the cativity and direction of mption vector," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 12, pp. 1209-1216, 2003. DOI: .

[ACM Style]

Sung-Jo Koo, Hae-Won Jang, and Chan-Sik Hwang. 2003. Bit-rate control of transcoder considering the cativity and direction of mption vector. The Journal of Korean Institute of Communications and Information Sciences, 28, 12, (2003), 1209-1216. DOI: .

[KICS Style]

Sung-Jo Koo, Hae-Won Jang, Chan-Sik Hwang, "Bit-rate control of transcoder considering the cativity and direction of mption vector," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 12, pp. 1209-1216, 12. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880