easy rtp parser
npm i @penggy/easy-rtp-parser
const Parser = require('@penggy/easy-rtp-parser');
var rtp = Parser.parseRtpPacket(rtpBuf);
console.log(`ssrc : ${rtp.ssrc}`);
var bKeyframe = Parser.isKeyframeStart(rtp.payload);
console.log(`key frame : ${bKeyframe}`);