An MMT-Based Hierarchical Transmission Module for 4K/120fps Temporally Scalable Video

Yasuhiro MOCHIDA  Takayuki NAKACHI  Takahiro YAMAGUCHI  

IEICE TRANSACTIONS on Information and Systems   Vol.E103-D   No.10   pp.2059-2066
Publication Date: 2020/10/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2020PCP0008
Type of Manuscript: Special Section PAPER (Special Section on Picture Coding and Image Media Processing)
MPEG Media Transport (MMT),  high frame rate (HFR),  temporally scalable coding,  hierarchical transmission,  

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High frame rate (HFR) video is attracting strong interest since it is considered as a next step toward providing Ultra-High Definition video service. For instance, the Association of Radio Industries and Businesses (ARIB) standard, the latest broadcasting standard in Japan, defines a 120 fps broadcasting format. The standard stipulates temporally scalable coding and hierarchical transmission by MPEG Media Transport (MMT), in which the base layer and the enhancement layer are transmitted over different paths for flexible distribution. We have developed the first ever MMT transmitter/receiver module for 4K/120fps temporally scalable video. The module is equipped with a newly proposed encapsulation method of temporally scalable bitstreams with correct boundaries. It is also designed to be tolerant to severe network constraints, including packet loss, arrival timing offset, and delay jitter. We conducted a hierarchical transmission experiment for 4K/120fps temporally scalable video. The experiment demonstrated that the MMT module was successfully fabricated and capable of dealing with severe network constraints. Consequently, the module has excellent potential as a means to support HFR video distribution in various network situations.