抄録
We report on development of prototype hybrid cast application using 4k live streaming and companion screen. A recoded 4k video of Koshien games in summer 2017 was encoded in real time at adaptive bit rate (three different rate), packaged in MPEG-DASH and uploaded to the cloud. The 4k video was delivered to a television receiver and played using the IPTV-F dashNX player. In addition, we also developed an application which controls playback of 4k live video on TV terminal from smartphone by using companion screen architecture of Hybridcast and confirmed that trick play control by it was operated stably.
