Top of page

Font Size

Content Area

Real-time spherical video delivery system (interactive video delivery technology)

- Making it possible for people at remote sites to share a high-reality video -

Do you have the problems shown below? This technology will solve them!

Nowadays it has become possible to view a high-definition video of a concert or other event held at a venue around the country in real time using a variety of media terminals. However, it is still difficult to satisfy users who want virtual reality, i.e., a sensation of being at the event venue.

This technology makes it possible to meet the following needs by integrating interactive video delivery technology and an Internet service:

  • I want to view a high-reality video in real time.
  • I want to view the part that interests me of a spherical high-definition video that covers a wide area.
  • I want to use a smartphone as a simple head-mounted display (HMD).


To provide a high sensation of reality, it is necessary to use dedicated devices, such as (1) a 360-degree spherical camera and (2) a head-mounted display (HMD). However, the amount of video data captured by (1) is so huge that a broadband network must be available for users at remote sites. It has been difficult to satisfy this requirement.

To reduce the required bandwidth, this technology divides a video from a spherical camera, which covers a wide area, into tile-like segments. Those tiles of main interest to the user are compressed with a high resolution, and transmitted to the user. The tiles not being viewed directly by the user are compressed with a low resolution and transmitted to the user, so that the entire spherical area is visible to the user, albeit with high resolution only for the part of interest. Therefore, the user can view a high-reality video via a normal network.

This technology can be further used for applications that incorporate acoustic effects or for sports events.

[image] Interactive video delivery technology
Interactive video delivery technology

Application fields

  • Video information services
  • Advertising, distribution and content delivery
  • Entertainment


Since a spherical video that covers a wide area can be transmitted without reducing its video quality, it is possible to provide a high-reality video to users - even to those who view the video using mobile terminals, such as smartphones.

Footer Area
Copyright © 2016 Nippon Telegraph and Telephone Corporation