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In this paper a practical real-time video trans-mission system is proposed by combining SVC (Scalable Video Coding) and MDC (Multiple Description Coding). Each description of MDC can be designed as scalable bit stream which is helpful for UDP/RTP based transmission over practical packet loss network, such as Internet. To provide different spatial resolution / fidelity videos and flexible transmission over error-prone network, a new coding architecture needs to be revised. In the proposed coding scheme, each MDC description includes independent copy of raw video with lower quality, and each copy can be compressed using SVC. The proposed system achieved better experimental results when compared to schemes without MDC, especially when packet loss occurs.