The Importance of High-Definition Real-Time Streaming Technology and Ultra-Low Latency
블랙티비The essence of sports broadcasting lies in fully conveying the tension and emotion of the live event—a drama without a script—without any time lag. While VOD content like movies or dramas can freely utilize buffering mechanisms to pre-download data to prevent buffering, even a delay of just one second in live sports broadcasting can fatally degrade the user experience. For instance, watching a soccer match via online streaming and only belatedly seeing a goal on screen after hearing cheers erupt from a neighbor is the worst possible experience for a sports fan. Therefore, the core challenge of modern sports streaming technology lies in securing 'Ultra-Low Latency' technology that minimizes the time difference with the live event without compromising image quality.
Traditional internet streaming methods, such as HLS (HTTP Live Streaming) and DASH protocols, transmit video in small chunks of a few seconds to ensure stable playback. This process inevitably results in network latency ranging from 10 to 30 seconds. To address this, 'WebRTC (Web Real-Time Communication)' and 'LHLS (Low-Latency HLS)' are technologies that sports broadcasting platforms have recently been actively adopting. In particular, WebRTC technology is designed to transmit audio and video data in real-time between web browsers without the need for separate plugins, reducing latency to less than one second or even milliseconds (ms). Through this, viewers can now enjoy live on-site events from the comfort of their homes at speeds equivalent to or faster than terrestrial TV broadcasts.
Ultra-low latency technology goes beyond simply "watching the screen faster"; it provides the technical foundation for sports broadcasting platforms to combine various revenue models with interactive services. A prime example is real-time interactive services. If there is virtually no latency during a match, viewers can enjoy two-way communication perfectly synchronized with the broadcast screen, such as voting on the next play, participating in real-time quiz events, or instantly sending virtual sponsorships to players. If latency is long, these real-time interactive services cannot fully function due to time zone mismatches. Minimizing network latency is the key to maximizing user engagement on the platform and creating additional business opportunities.
Furthermore, the combination of ultra-high-definition video of 4K UHD and 8K with multi-channel surround sound technologies like Dolby Atmos further enhances the value of ultra-low latency streaming. Powerful CDN (Content Delivery Network) infrastructure and efficient video compression codec technology are essential for transmitting large volumes of high-quality data without delay. Recently, technologies utilizing next-generation codecs such as AV1 and VVC are being applied to maximize image quality while reducing bandwidth consumption. Thanks to such dramatic evolution in network transmission infrastructure and compression technology, modern sports fans can vividly and lag-free enjoy real-time, experiencing everything from the sweat to the breathing of the crowd through mobile devices and smart TVs, without having to go to the stadium in person. Black TV