One-page reference: the four PLC families (zero insertion, waveform substitution / G.711 App I, model-based, neural), what WebRTC's NetEQ Expand and Merge operations do, how PLC compares with FEC/RED and retransmission (latency, bandwidth, exact-recovery), the Opus 1.5 deep-PLC and DRED build flags and costs, the isolated-vs-burst loss rule, and the getStats concealment fields to watch.
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The book · Volume 5 of 7
Audio for Video: A Complete Guide to Sound in Video Products: From Jitter Buffers and Lip Sync to Atmos, Quality Metrics, and Neural Codecs
This packet loss concealment (PLC) cheat sheet covers the four PLC families, NetEQ Expand and Merge, PLC versus FEC, RED and retransmission, and Opus deep-PLC and DRED. Volume 5 covers this topic in depth: jitter buffers and NetEQ, loss concealment, FEC and RED, bitrate decisions and diagnosing call audio incidents by symptom. Written by Nikolay Sapunov, CEO at Fora Soft.
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