Influence of encoder parameters on the decoded video quality for MPEG-4 over W-CDMA mobile networks

The MPEG-4 standard provides error resilience tools that can significantly increase the decoded video quality when using error prone media to transmit or store the encoded data. However, the use of these tools introduces extra redundancy and overhead in the bitstreams, which means that the decoded video quality can be severely affected if no careful configuration of the relevant parameters is done while taking into account the error characteristics of the channel being used. In this paper, a videotelephony system over a W-CDMA mobile network is used to study the influence of the encoding parameters on the decoded video quality, notably its behavior and optimization.