Error-driven adaptation for GOP video transport in wireless channel

In this paper, we develop a new error-driven adaptation scheme based on a classical error control used at the frame-level of Group of Picture (GOP) for MPEG-4 video stream on a noisy wireless channel. A model adds extra parity packets to the original GOP frames using Reed-Solomon Forward Error Correction (RS FEC) scheme. Various packet-correction codes are examined at high channel errors in order to achieve a maximum perceptual video quality at client. Further, we propose a scenario to adapt packet-errors with aim to improve the video quality under a condition that the video server can reduce the packet length once threshold error feedback report of TCP-Friendly protocol is delivered. The scheme reduces the video distortion at the decoder under bandwidth constraints. The reduction is achieved by efficiently protecting the different video frames from channel errors. Furthermore, this efficient decoding algorithm can reduce the decoding complexity of channel decoder. Numerical results clearly show that the proposed approach outperforms a classical RS FEC scheme.