~/talk

Enabling High-Quality Real-Time Communications with Adaptive Frame-Rate

on YouTube 15m
Talkat NSDI 2023 · 2023-04-17..04-19· [web-performance, networking]

speakers

name:Zili Meng
links:none on file
name:Tingfeng Wang
links:none on file
name:Yixin Shen
links:none on file
name:Bo Wang
links:none on file
name:Mingwei Xu
links:none on file
name:Rui Han
links:none on file
name:Honghao Liu
links:none on file
name:Venkat Arun
links:none on file
name:Hongxin Hu
bluesky:hongxinhu.bsky.social
name:Xue Wei
links:none on file

resources

video:https://youtu.be/MwmAo-hjVf8
slides:none on file

summary

Adaptive Frame Rate (AFR) is a controller that coordinates frame rate with network fluctuation and decoder capacity to avoid transient decoder overloads, implemented for Tencent cloud gaming and validated with 40,000+ hours and 30,000+ sessions of traces. AFR addresses untimely queue signals and multiple queue causes, predicts delay from arrival/departure stats, and adapts frame rate (no codec change). Trace-driven sims and large deployments show 7.4× tail reduction and 34% fewer stalls and AFR is deployed in production as Adaptive Frame Rate (AFR).

AI-written summary · about

chapters (9)

  1. 0:00Introduction to RTC
  2. 1:00The problem of latency
  3. 2:52Decoder queue overload
  4. 5:06Adaptive frame rate solution
  5. 7:08Challenges in latency control
  6. 8:37Predictive queue modeling
  7. 10:53Addressing practical factors
  8. 11:44Evaluation and results
  9. 13:36Conclusion and takeaways

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