Advanced Television

KAIT edits and processes uncompressed 8K video through cloud-based live streaming, and distributes over IP

November 17, 2019

The Kanagawa Institute of Technology (KAIT) has succeeded in switching l uncompressed 8K ultra-high-definition (UHD) live streaming faster than switching TV channels. This is done through multiple 8K cameras and stored video materials in cloud that switches the network edge portion on based on the request from the terminal devices.

As for 8K/4K broadcasting which started in December 2018, KAIT has been developing the transmitter, store and distribution /accumulation system to deliver the broadcasting material without having to use a compression tool and at the same time sacrificing UHD streaming video quality. Through transmit/display experimentation, we have succeeded in delivering live streaming video from multiple 8K ultra-high-definition  cameras that switch out signal level deterioration in response to request from the terminal devices. By utilizing the software packet, we have been able to switch on the network edge portion of the technology for multiple events such as the Sapporo Snow Festival in February 2019 and Interop Tokyo 2019, which is a network exhibition that took place in June 2019.

Currently, technology takes approximately 100 milliseconds to a couple of seconds to complete the transfer request between switches. However, it is now proven that installing the newly developed software packet to switch on the transmitting line makes it possible to change video display within 1 video frame.

This experiment during the Sapporo Snow Festival in February 2019 was conducted in cooperation with several related organizations, including the Japanese Test Bed Network JGN of the National Institute of Information and Communications Technology (NICT) and SINET5 of the National Institute of Informatics (NII). Four types of 8K uncompressed videos were instantaneously switched and transmitted using a software packet to switch on the 8K dual green (8K-DG) format (24 Gbps) of 8K (7680 × 4320 pixels, 16 times the HDTV) ultra- high-definition live uncompressed video through a 100 Gbps domestic broadband line between Sapporo and Tokyo and Osaka ( Total distance of 930 miles).

In the case of the software-based packet switch, processing 24 Gbps per stream had been achieved by conducting an IP packet data input preparation process that used a conventional IP multi-cast technology. The IP packet data section of the selected 8K ultra-high resolution live video was replaced with the IP packed data section in order to output a video switching process of less than 1 video frame. After reviewing the result of this proof experiment, we will further proceed with our R&D by establishing new media producing technology in collaboration with the Multimedia Research Laboratory.

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