Transcoder architectures for video coding

This paper discusses the problem of transcoding H.263-based video streams. Two different models for transcoding are examined, rate reduction and resolution reduction. Results show that the computational complexity of the basic transcoding model can be reduced for each model by, on average, 39% and 23% without significant lose in quality. Comparisons with the scaleable coding model are also shown.

[1]  Mohammed Ghanbari,et al.  Post-processing of MPEG2 coded video for transmission at lower bit rates , 1996, 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings.

[2]  Lurng-Kuo Liu,et al.  A block-based gradient descent search algorithm for block motion estimation in video coding , 1996, IEEE Trans. Circuits Syst. Video Technol..

[3]  Vasudev Bhaskaran,et al.  A fast approximate algorithm for scaling down digital images in the DCT domain , 1995, Proceedings., International Conference on Image Processing.

[4]  Gertjan Keesman,et al.  Transcoding of MPEG bitstreams , 1996, Signal Process. Image Commun..

[5]  Huifang Sun,et al.  Architectures for MPEG compressed bitstream scaling , 1996, IEEE Trans. Circuits Syst. Video Technol..

[6]  Mohammed Ghanbari,et al.  Transcoding of MPEG-2 video in the frequency domain , 1997, 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing.