In order to increase the throughput of IEEE 802.16d systems to improve the quality of video service, a method is proposed to evaluate the degree of error of Orthogonal Frequency Division Multiplexing(OFDM) symbols in the physical layer, and a cross-layer error resilient system for video transmission is designed. In the physical layer, the degree of error for OFDM symbols is calculated in the time domain from the mean metric of the survivor path and an error-level factor is defined. According to the error-level factor sent from physical layer and the threshold of error resilience,the MAC layer can decide whether or not the frame with CRC errors is passed to the upper layer. A packet-level FEC algorithm is designed to restore discarded and error affected video frames in the application layer. Experimental results indicate that the error-resilient system can guarantee the user acceptable video Peak Signal to Noise Ratio(PSNR),when the error-resilient threshold value is within 0.02-0.06. Compared to the original IEEE802.16d, the error-resilient 802.16d proposed in this paper can support a larger throughput and a better quality video service.This conclusion also holds for different channel conditions.