Kuaishou Audio & Video Technology

Sep 4, 2025 · Fundamentals

How LingXi Revolutionizes User‑Level QoE with Scalable Adaptive Video Streaming

A joint Kuaishou‑Tsinghua study presented at ACM SIGCOMM 2025 introduces LingXi, the first large‑scale production system that personalizes adaptive video streaming by targeting stall events, using online Bayesian optimization, Monte Carlo simulation, and a hybrid exit‑rate predictor to achieve significant QoE and QoS gains across millions of users.