Underwater hostile channel conditions challenge video transmission designs.The current designs often treat video coding and transmission schemes as individual modules.In this study,we develop an adaptive transceiver with channel state information (CSI) by taking into account the importance of video components and channel conditions.The design is more effective than the traditional ones.However,in practical systems,perfect CSI may not be available.Therefore,we compare the imperfect CSI case with existing schemes,and validate the effectiveness of our design through simulations and measured channels in terms of a better peak signal-to-noise ratio and a higher video structural similarity index.