A novel method of adaptive GOP structure based on the positions of video cuts

In this paper we propose a novel method of improving the video coding efficiency. Our method combines the shot cut detection and adaptive GOP structure. We have analyzed different approaches for shot cut detection with aim to choose the most appropriate one. The next step is to situate I frames to the positions of detected cuts during the process of video encoding. Finally the efficiency of the proposed method is confirmed by simulations and the obtained results are compared with fixed GOP structures of sizes 4, 8, 12, 16, 32, 64, 128 and GOP structure with length of entire video. Proposed method achieved the gain in bit rate from 0,37% to 50,59%, while providing PSNR gain from 1,33% to 0,26% in comparison to simulated fixed GOP structures.