Douyu Streaming

Oct 29, 2021 · Fundamentals

Mastering WebRTC SDP: A Complete Guide to Analyzing Session Descriptions

This article provides a systematic overview of SDP (Session Description Protocol) and its detailed usage in WebRTC, covering protocol structure, media and session level fields, Plan B vs Unified Plan styles, and the extensive a‑line extensions such as codec, ICE, DTLS, and simulcast parameters.