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Using multipath routing protocols results in more efficient data transmission than single path routing protocols in Wireless Multimedia Sensor Networks (WMSNs). In this paper, we propose a new mechanism for improving video transmission over WMSN based on queue priority scheduling. We assume that network has high CBR traffic with no video data in addition to video packets. In our mechanism, intermediate nodes buffer (queue) is scheduled for quick and righteously transmission of video packets compared with the other packets in network. Simulation results show that our proposed scheduling improves important Quality-of-Service (QoS) metrics such as end-to-end delay and frame loss percentage for video streaming.