A novel transmission approach based on video content for 360-degree streaming

Because of the immersive experience provided, 360-degree video is developing rapidly. However, high data volume is needed to create the panoramic video for the end-user, which conflicts with the limited transmission resources. In this paper, we present a novel transmission approach based on video content to guarantee an acceptable objective video quality for end-users by reusing the transmitted video data, in which transmission resources are saved by transmitting part of video data. The approach is designed to address challenges, such as the increment of video data volume from the tile-based encoding and the inconsistency between transmitted tiles and the viewed region using a single mode of tile partition. We also employ public network traces to simulate the network condition in our work. Simulated results show that our proposed approach can save bandwidth of 5 %∼ 12 % only at the price of slightly eroding the perceived quality measured by SSIM value than transmitting all video data in the viewport. Moreover, the bandwidth saving varies with different video content.