7.4.2004

Robustness of video transmission systems against packet losses is an indispensible requirement for high performance communication networks. This paper describes a system for erasure-resilient transmission of a video data stream over packet-based networks. The video codec combines embedded wavelet compression, enhanced by a block based motion prediction scheme with the priority encoding technique (PET).

Such a system which encodes packets with different priority levels by multiple Reed-Solomon codes is protecting the video stream against packet losses. The priority levels are adapted to the bit allocation of the wavelet bands. Video trasmission experiments demonstrate that the proposed video system can be efficiently employed for erasure-resilient transmission of video data.