Live Streaming at "Spring Festival in Tokyo" — 2025–10–22 Tokyo Video Tech #10 Session 1 Report

A classical music festival and an internet infrastructure company might seem like an unlikely pairing. But for the past several years, IIJ (Internet Initiative Japan) — one of Japan's first commercial internet service providers, founded in 1992 and now a major force in cloud, networking, and enterprise IT — has been quietly pushing the boundaries of live streaming technology. Not for esports or pop concerts, but for opera, chamber music, and orchestral performances in the heart of Tokyo's Ueno Park. At Tokyo Video Tech #10 "Continuous", held on October 22, 2025 at the Netflix Tokyo office, Fumitaka Watanabe from IIJ pulled back the curtain on what it really takes to deliver these streams: the hundreds of meters of cables laid and removed for every show, the custom subtitle tools built because AI couldn't match the nuance of opera, and the creative networking solutions required when your venue is two floors underground in a World Heritage site. Report by: Katz Sakai “Spring Festival in