Toward One-Second Latency: Evolution of Live Media Streaming
Abstract
This survey presents the evolution of live media streaming and the technological developments behind today's IP-based low-latency live streaming systems. Live streaming primarily involves capturing, encoding, packaging and delivering real-time events such as live sports, live news, personal broadcasts and surveillance videos. Live streaming also involves concurrent streaming of linear TV programming off the satellite, cable, over-the-air or IPTV broadcast, where the programming is not necessarily a real-time event. The survey starts with a discussion on the latency and latency continuum in streaming applications. Then, it lays out the existing live streaming workflows and protocols, followed by an in-depth analysis of the latency sources in these workflows and protocols. The survey continues with the technology enablers, low-latency extensions for the popular HTTP adaptive streaming methods and enhancements for robust low-latency playback. An entire section is dedicated to the detailed summary and findings of Twitch's grand challenge on low-latency live streaming. The survey concludes with a discussion of ongoing research problems in this space. We expect this survey to be the one-stop reference for those who would like to learn how low-latency live streaming has evolved and works today, and what further developments could happen in the future.
Cite
@article{arxiv.2310.03256,
title = {Toward One-Second Latency: Evolution of Live Media Streaming},
author = {Abdelhak Bentaleb and May Lim and Mehmet N. Akcay and Ali C. Begen and Sarra Hammoudi and Roger Zimmermann},
journal= {arXiv preprint arXiv:2310.03256},
year = {2025}
}