Implementing VVC Tile Extractor for 360-degree Video Streaming Using Motion-Constrained Tile Set

Jeong, Jong-Beom;Lee, Soonbin;Kim, Inae;Lee, Sangsoon;Ryu, Eun-Seok

  • Received : 2020.10.29
  • Accepted : 2020.12.02
  • Published : 2020.12.30


360-degree video streaming technologies have been widely developed to provide immersive virtual reality (VR) experiences. However, high computational power and bandwidth are required to transmit and render high-quality 360-degree video through a head-mounted display (HMD). One way to overcome this problem is by transmitting high-quality viewport areas. This paper therefore proposes a motion-constrained tile set (MCTS)-based tile extractor for versatile video coding (VVC). The proposed extractor extracts high-quality viewport tiles, which are simulcasted with low-quality whole video to respond to unexpected movements by the user. The experimental results demonstrate a savings of 24.81% in the bjøntegaard delta rate (BD-rate) saving for the luma peak signal-to-noise ratio (PSNR) compared to the rate obtained using a VVC anchor without tiled streaming.