2019-07-16（源码分析——server.py）

包

import argparse
import asyncio
import json
import logging
import os
import ssl
import uuid
import cv2
import av
import time
from aiohttp import web
from av import VideoFrame
from aiortc import RTCPeerConnection, RTCSessionDescription, VideoStreamTrack
from aiortc.contrib.media import MediaPlayer, MediaRecorder
from publisher import Mqtt
import numpy as np