Low Latency HLS: How to Fix High Latency Issue Step by Step

HLS (HTTP Live Streaming) is a widely adopted technology for delivering live video, initially developed by Apple, which breaks down video streams into small segments for efficient transmission and playback. However, traditional HLS suffers from high latency, typically ranging from 10 to 30 seconds, due to the buffering requirements that ensure smooth playback despite network issues. To address this, the HLS.js community and partners have developed Community Low Latency HLS (LHLS), which aims to achieve low latency of 2 to 5 seconds using techniques like HTTP/1.1 chunked transport and pre-announcing segments. Despite these improvements, LHLS does not meet the sub-500 millisecond latency required for real-time applications, driving the use of WebRTC for scenarios that demand ultra-low latency, such as drone surveillance and live broadcasts. Red5 offers solutions for both low-latency and real-time streaming needs, providing scalable services like Red5 Cloud and Red5 Pro, which support a vast number of broadcasters and subscribers.

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