~/talk

AnchorNet: Bridging Live and Collaborative Streaming with a Unified Architecture

Talkat USENIX ATC '25 · 2025-07-07..07-09· [web-performance, networking]
name:Tong Meng
links:none on file
name:Wei Zhang
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name:Dong Chen
links:none on file
name:Zhen Wang
links:none on file
links:none on file
links:none on file
name:Wei Yang
links:none on file
name:Chao Yuan
links:none on file
name:Le Zhang
links:none on file
links:none on file
links:none on file
slides:none on file

AnchorNet implements a unified stream path with the RTC SFU as the single CDN publisher and server-side mixing, solving mode switches between single-host and collaborative streams. It adds audio sample-level splicing (duplicate tail samples, add priming to align frames) to handle encoder delays and codec hops (ASA <-> Opus transcoding). A four-week AB test with tens of millions daily shows video rebuffering drops of ~60–80%, engagement up to 3.83% and viewer watch time increases near 4%, so the system demonstrably works.

AI-written summary · about

  1. 0:00AnchorNet introduction
  2. 1:21Live vs collaborative streaming
  3. 3:08Server-side stream mixing
  4. 6:41DualNet to AnchorNet
  5. 9:13End-to-end paths in AnchorNet
  6. 10:59Audio splicing techniques
  7. 11:19AnchorNet performance gains
  8. 12:44Future AnchorNet optimizations
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