Abstract: Channel condition prediction employing a transmit queuing model. An average transmission queue delay monitor generates an indication of average transmit queue latency during the transmission of a video stream to a remote wireless device. The average transmit queue latency is compared to a predetermined threshold for purposes of adjusting encoding bit rate (or other encoding parameter) of the video stream. In one mode, the predetermined threshold reflects a maximum tolerable average queue depth beyond which video data is likely to be lost or unacceptably delayed under certain channel conditions. If the average transmit queue latency exceeds the predetermined threshold, the encoding bit rate (or related encoding parameter) is lowered or raised as necessary to decrease or increase the transmit queue depth to a desired level. In another mode, the transmit queuing model is used in conjunction with channel throughput estimation information to adaptively adjust one or more encoding parameters.