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Extensions of ITU-T recommendation H.324 for error-resilient video transmission

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3 Author(s)
Farber, N. ; Erlangen-Nurnberg Univ., Germany ; Girod, B. ; Villasenor, J.

The authors provide an overview of techniques that enable the use of ITU-T recommendation H.324 with error-prone transmission channels. H.324 covers the overall architecture, algorithms, and syntax for low-bit-rate multimedia terminals. This overview focuses on extensions for error-resilient video transmission that are related to the H.263 video codec and H.223 multiplex. The latter is responsible for reliable delivery of data to each terminal component and is therefore of major importance to the overall system. In particular, the discussed approaches to robust video transmission require reliable performance of the multiplex scheme. The considered techniques for video coding are either compatible with the baseline mode of H.263 or part of new extensions recently devised by Study Group 16 as part of the H.263+ effort. This overview includes “error tracking” (Appendix II). “reference picture selection” (Annex N), and “independent segment decoding” (Annex R). Whenever appropriate, the description of those video extensions and multiplex schemes is complemented with simulation results for transmission over Rayleigh fading channels

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Communications Magazine, IEEE  (Volume:36 ,  Issue: 6 )