An adaptive error concealment mechanism for H.264/AVC encoded low-resolution video streaming

Low-rate video is widely used especially in mobile communications. H.264/AVC (advanced video coding) is well suited for the real-time error resilient transport over packet oriented networks. In real-time communications, lost packets at the receiver cannot be avoided. Therefore, it is essential to design efficient error concealment methods which allow to visually reduce the degradation caused by the missing information. Each method has its own quality of reconstruction. We implemented various efficient error concealment techniques and investigated their performance in different scenarios. As a result, we propose and evaluate an adaptive error concealment mechanism that accomplishes both - good performance and low complexity enabling the deployment for mobile video streaming applications. This mechanism selects suitable error concealment method according to the amount of instantaneous spatial and temporal information of the video sequence.