JVET-AM0235 Implementation of error resilient transmission system for scalable services [S. Iwamura, S. Nemoto, Y. Kondo, A. Ichigaya (NHK)]

This contribution reports development of transmission system of multi-resolution video services using VVC multi-layer coding for providing videos with appropriate quality/resolution according to the reception environment. The developed transmission system assumes that different paths are used for the transmission of the base layer and the enhancement layer and introduces bitstream synthesis processing to reconstruct the original multi-layer bitstream from separately transmitted data while compensating for the transmission delay of each path. Furthermore, an error concealment function is incorporated to the system to maintain service quality when the transmission quality of the enhancement layer deteriorates.

It was commented that in a broadcast scenario packet losses do not occur by low latency effects, but rather by the fact that certain packets may not reach certain users, and no feedback.

An approach of “dummy data” is suggested that can be used for concealment in case of data losses.

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