推流命令：
ffmpeg -f gdigrab -framerate 30 -i desktop -c:v libx264 -preset ultrafast -tune zerolatency -pix_fmt yuv420p -f flv rtmp://xxx.xxx.xxxx.xx/live/livestream后面是推流地址
推流后的播放地址为：
http://xxxxxx:8080/live/livestream.flv
可以写一个网页来进行播放flv：
- html>
- <html>
- <head>
- <title>FLV Video Playertitle>
-
- <script src="https://cdn.jsdelivr.net/npm/flv.js@latest">script>
- head>
- <body>
- <video id="video" controls>video>
-
- <script>
- if (flvjs.isSupported()) {
- var videoElement = document.getElementById('video');
- var flvPlayer = flvjs.createPlayer({
- typ