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Cinematic virtual reality provides an immersive visual experience by presenting omnidirectional videos of real-world scenes. A key challenge is to develop efficient representations of omnidirectional videos in order to maximize coding efficiency under resource constraints, specifically, number of samples and bitrate. We formulate the choice of representation as a multi-dimensional, multiplechoice knapsack problem and show that the resulting representations adapt well to varying content. We alsodoi:10.1145/2814347.2814348 dblp:conf/mm/YuLG15 fatcat:5zgkfwwkarcf7hq4lm3mdfsgui