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The team built a reusable low‑latency live‑streaming platform for the European Cup that replaces HLS with RTMP over QUIC, reuses VOD bandwidth, automates stream control, and cuts playback latency by 20 seconds while dramatically lowering bandwidth costs and delivering stable 1080p 50 fps HDR video.
This article details OPPO's low‑latency audio‑video technology for cloud rendering, covering transmission requirements, the integration of RTC with cloud rendering, streaming architecture, optimization techniques across encoding, transport, and reception, and future outlooks for ultra‑low‑delay applications.
This article analyzes three SIGCOMM‑presented papers from Alibaba Cloud that propose GSO‑Simulcast for real‑time video conferencing, LiveNet for low‑latency live‑streaming CDN overlay, and Zhuge for fast feedback in Wi‑Fi video transmission, illustrating how predictable audio‑video networks are built to meet emerging metaverse demands.
Taobao’s 2022 Maker Festival unveiled a cloud‑rendered 3D virtual camp that supports thousands of simultaneous users without local downloads, using model simplification, texture optimization, dynamic scaling, frame synchronization, motion compensation, intelligent node selection and FEC to deliver 1080p real‑time interaction and low latency, with future plans to integrate XR/CG for larger‑scale experiences.
Alibaba’s collaboration with Chinese academia led to the approval of the GRTN low‑latency multimedia transmission standard and the open‑source release of its multi‑path QUIC library XQUIC, which together cut video stall rates by over 60%, boost throughput, shorten download times, and are now powering live streaming, video conferencing, e‑commerce and cloud‑gaming services across Alibaba’s ecosystem.
The Tencent Cloud and China Academy of Information and Communications Technology whitepaper introduces ultra‑low latency live streaming technology, detailing its WebRTC‑based architecture, miniSDP compression, AV1 support, adaptive bitrate, and real‑world applications in e‑commerce, cross‑domain events, and education, while outlining future trends and industry impact.
Youku’s engineering team introduced two Low‑Latency HLS solutions—an Apple‑based LHLS using HTTP/2 extensions and a community‑driven chunked‑transfer variant—while detailing latency sources in traditional HLS and presenting six protocol‑level optimizations that together reduce end‑to‑end live‑stream delay to under two seconds.
This article explains the HTTP Live Streaming (HLS) protocol, its standard playlist and segment structure, the latency challenges of traditional HLS, and details Apple’s low‑latency HLS draft with five technical improvements, demo implementation, and a comparison to Periscope’s LHLS approach.