With the wide deployment of broadband wireless networks around the world, there is a growing interest in wireless personalized video streaming. However, the bit error rate (BER) of wireless networks is much higher than that of wired networks. The high BER, unfortunately, will significantly degrade the visual quality of video streaming. In this paper, we propose an adaptive error control scheme for broadcast-based video-on-demand services. The proposed scheme can adaptively allocate proper forward error correction codes to different video streams according to the measured network conditions, such that the average visual quality of all clients can be maximized.