Error Concealment Used for P-Frame on Video Stream over the Internet

Error concealment on the end of decoder, which makes use of the correctly received video data to conceal the lost video, does not need any redundancy data and has no impact to bandwidth of network. A new concealment method based on multiple motion predictions is proposed here. In this paper, motion vectors in the past and/or future frames are used to achieve the current motion vectors when the current frame is suffered, so the lost parts can be reconstructed. Experimental results show that the performance of the new method is superior to traditional single or dual forward prediction error concealment. Key-Words: motion vector;error concealment;video stream;Internet