Proposal for Robust and Adaptive Forward Error Correction for real-time Audio-Video streaming solutions

Abstract

In this paper, we present a robust and adaptive forward error correction technique for high end Audio-Video Streaming solutions. This solution targets all kinds of network loss conditions and can be used in any embedded platforms. This technique uses optimum solution for packet loss recovery that involves switching between adaptive FEC based packet loss recovery and retransmission management. Whenever network loss increases the permissible limit of adaptive FEC loss recovery, then it switches to re-transmission of media. Adaptive FEC based packet loss recovery works on best of adaptive matrix size selection, loss recovery method selection (on-the-fly or store and compute) and FEC codec selection (Parity 1D, 2D, Raptor, Read Solomon and Hamming etc.) This technique also incorporates support for embedded systems which do not have much computation power. For such embedded systems, the adaptive FEC recovery technique switches to fixed matrix of having store and save approach for single and burst packet loss recovery. This technique provides inter-operability w.r.t FEC codec selection which also takes care of embedded system capability. Keywords - Adaptive FEC, Adaptive matrix size, FEC coding (Parity 1D, 2D, Raptor, read-soloman, hamming etc.), , FEC SDP negotiation, packet loss calculation techniques