Multiple description video coding based on H.264 with error concealing for whole frame losses

The robustness and quality of video transmissions by a multiple description video coding algorithm based on the H.264 standard with an error concealing scheme when whole frames are lost.The algorithm uses the standard video encoder with a pre-processing stage to generate multiple descriptions and the relative coding information.The decoder then uses a post-processing algorithm and side information to combine the descriptions to provide better image quality.The error concealing scheme uses the corresponding frame from another description of the video to replace the lost frame.Test results show that the algorithm significantly improves video quality,especially when large quality differences occur between the two descriptions,with gains of up to 2.38 dB.When wholes frames are lost,the gain will be several dB.