Two-step optimization of 3D wavelet video streaming over lossy networks

In video streaming, a time-varying packet loss rate leads to both degradation and inconsistency in video quality. We propose a two-step optimization algorithm to address the above problems in 3D wavelet video streaming. First, the bits used for transmitting each group of video frames (GOF) is dynamically allocated according to the changing traffic conditions such that the quality of video is consistent. Secondly, content-based retransmission is deployed to minimize the distortion caused by packet loss for each individual GOF. Simulation results show that the two-step optimization method can both improve the video quality (more than 2 dB) and reduce the quality variation significantly.