13-Hour High-Speed Rail Livestream Achieves Technical Perfection: How TVU Networks Powered Hangzhou TV’s 2,000-Kilometer Broadcast
Hangzhou Television executed a groundbreaking 13-hour uninterrupted livestream aboard China's high-speed rail network, traversing nearly 2,000 kilometers at 350 kilometers per hour without a single technical glitch. This feat, made possible by TVU Networks' mobile broadcasting technology, demonstrates exceptional engineering excellence in extreme broadcasting conditions.
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CUPERTINO, CA—April 22, 2025 – On April 14th, as train G3754 departed Hangzhou West Station, Hangzhou TV embarked on an unprecedented broadcasting challenge. The newly opened high-speed rail connection between Hangzhou and Ulanqab has reduced travel time from 26 hours to just 13 – transforming an overnight journey into a single-day trip.
For Hangzhou TV’s production team, the primary technical challenge was maintaining broadcast integrity while moving at 350 km/h – a speed that creates extreme network instability and makes high-quality livestreaming nearly impossible with conventional technology. Signal blackouts in tunnels and mountainous terrain further complicated the requirement for uninterrupted, broadcast-quality transmission over 13 continuous hours.
Hangzhou TV deployed the TVU One mobile streaming platform to overcome the formidable challenge of broadcasting at 350 km/h. The system enabled comprehensive coverage of the departure ceremony, guest interviews, and passenger interactions throughout the journey, with all video feeds seamlessly transmitted to Hangzhou TV’s studio.
The TVU One system succeeded through four key innovations designed for extreme-speed broadcasting: TVU’s proprietary IS+ protocol dynamically combines multiple 4G/5G networks, maintaining stability even when signals rapidly fluctuate at 350 km/h. HEVC smart encoding with forward error correction adjusts transmission parameters in milliseconds, ensuring image clarity despite severe network instability. Hot-swappable batteries enabled uninterrupted power for the 13-hour journey, while the compact, vibration-resistant design performed consistently under constant high-speed motion.
Throughout the entire 13-hour livestream at 350 km/h, viewers experienced crisp visuals, stable audio, and minimal latency—an unprecedented broadcasting achievement. Even through tunnels and remote areas, TVU One maintained high-quality transmission with “zero buffering,” reaching audiences across multiple platforms and establishing a new benchmark for mobile broadcasting excellence.
TVU Networks’ success demonstrates technical leadership in conquering what many considered impossible: flawless, broadcast-quality livestreaming at 350 km/h for 13 continuous hours—proving that with the right technology, even the most extreme broadcasting challenges can be overcome with perfect execution.
