The increase of IEEE 802.11's bandwidth led to a deployment of many multimedia applications over wireless networks. Nevertheless, these applications impose rigorous discipline constraints in QoS. To support the varying Quality-of-Service (QoS) requirements of emerging applications, the QoS-capable standard IEEE 802.11e has been specified. Digital video delivered over wired-to-wireless networks is expected to suffer quality degradation from packet loss. Video traffic is widely expected to account for a large portion of the traffic in future hybrid network, as multimedia applications are becoming increasingly popular. Initially this paper attempted to discover optimal parameters such as bandwidth utilization and packet size in order to enhance video stream quality and proposed New Adaptive Crosslayer Algorithm, a novel scheme for QoS enhancement for IEEE 802.11 wireless networks.