3种ffmpeg-web端视频直播推流方案

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ffmpeg-web端视频直播推流方案

记录了三种 ffmpeg 工具进行推流的方法，并在web端实现直播效果。

一. node-media-server + ffmpeg 推流rtmp

安装node-media-server依赖,新建app.js运行

npm install node-media-server -g

const  NodeMediaServer  = require('node-media-server');
const config = {
    rtmp: {
        port: 1935,
        chunk_size: 60000,
        gop_cache: true,
        ping: 60,
        ping_timeout: 30
    },
    http: {
        port: 8000,
        allow_origin: '*'
    }
};
var nms = new NodeMediaServer(config);
nms.run();

node app.js

执行ffmpeg推流

官网下载ffmpeg并配置把bin目录添加到环境变量
ffmpeg -version 查看版本
mpeg -list_devices true -f dshow -i dummy 查看可用以音视频设备

使用本地摄像头推流

ffmpeg -f dshow -i video="Integrated Camera":audio="麦克风阵列 (Synaptics SmartAudio HD)" -vcodec libx264 -acodec copy -preset:v ultrafast -tune:v zerolatency -f flv "rtmp://192.168.20.107:1935/live/home"

使用网络摄像头推流

ffmpeg -threads 5 -i rtsp://admin:px123456@192.168.20.100:554/Streaming/Channels/101 -tune zerolatency -preset ultrafast -vcodec libx264 -threads 5 -b:v 400k -s 720x576 -r 25 -acodec libfaac -b:a 64k -f flv rtmp://192.168.20.107:1935/live/home

rtsp://{账号}:{密码}@{ip}:{端口}/根据摄像头厂牌区分

rtmp://{本地ip}:1935/live/home

本地ip地址要设置为与网络摄像头同一网段

web端HTML页面

因为各浏览器不再支持flash，需要使用flv.js插件
 

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<script src="https://cdn.bootcss.com/flv.js/1.4.0/flv.min.js"></script>
<video id="videoElement" style="width: 80%;" controls="controls"></video>
<script>
    if (flvjs.isSupported()) {//检查flvjs能否正常使用
        var videoElement = document.getElementById('videoElement');//使用id选择器找到第二步设置的dom元素
        var flvPlayer = flvjs.createPlayer({//创建一个新的flv播放器对象
            type: 'flv',//类型flv
            url: 'http://192.168.20.107:8000/live/home.flv'//flv文件地址
        },{
            enableWorker: true,
            enableStashBuffer: false,
            stashInitialSize: 128
        });
        flvPlayer.attachMediaElement(videoElement);//将flv视频装载进video元素内
        flvPlayer.load();//载入视频
        flvPlayer.play();//自动播放
    }
</script>
</body>
</html>

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二. nginx + ffmpeg 推流hls

hls流延迟比较大，按官方的说法60秒内算正常！

下载安装nginx

Windows下安装方法：www.cnblogs.com/qfb620/p/55…

Linux下安装：blog.csdn.net/wenqiangluy…

配置nginx

修改配置文件：/conf/nginx.conf ，在server内添加：
 

location /hls {
	root html;
	#add_header Cache-Control no-cache;
	add_header Access-Control-Allow-Origin *;
}

修改配置文件：/conf/mime.types ，在types内添加：

application/vnd.apple.mpegurl m3u8;
application/x-mpegURL m3u8;
video/mp2t ts;

ffmpeg推流：

要在html目录下创建hls目录 
ffmpeg -i "rtsp://admin:px123456@192.168.20.100:554/Streaming/Channels/101" -vcodec libx265 -threads 5 -preset ultrafast -c copy -f hls -hls_time 5.0 -hls_list_size 1 15 D:/tool/Science/nginx-1.18.0/html/hls/test.m3u8

1. -hls_time n: 设置每片的长度，默认值为2。单位为秒
2. -hls_list_size n:设置播放列表保存的最多条目，设置为0会保存有所片信息，默认值为5
3. -hls_wrap n:设置多少片之后开始覆盖，如果设置为0则不会覆盖，默认值为0.这个选项能够避免在磁盘上存储过多的片，而且能够限制写入磁盘的最多的片的数量
4. -hls_start_number n:设置播放列表中sequence number的值为number，默认值为0

web端HTML页面

需要使用video.js插件 
<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title>video.js</title>
    <link href="https://unpkg.com/video.js@6.11.0/dist/video-js.min.css" rel="stylesheet">
    <script src="https://unpkg.com/video.js@6.11.0/dist/video.min.js"></script>
    <script src="https://unpkg.com/videojs-flash/dist/videojs-flash.js"></script>
    <script src="https://unpkg.com/videojs-contrib-hls/dist/videojs-contrib-hls.js"></script>
  </head>
  <body>
    <video id="my-player" class="video-js" controls>
        <source src="http://localhost/hls/test.m3u8" type="application/x-mpegURL">
        <p class="vjs-no-js">
          not support
        </p>
    </video>
    <script type="text/javascript">
      var player = videojs('my-player',{
        width:400,
        heigh:200
      });
    </script>
  </body>

三. 通过webSocket发送MPEG，前端解析MPEG绘制canvas

这是我试过延迟最小的方法，0.5秒左右，但是非常耗cpu。

创建app.js，安装WebSocket等相应模块

var fs = require('fs'), http = require('http'), WebSocket = require('ws');

// console.log(process.argv)
if (process.argv.length < 3) {
	// console.log('输入正确参数');
	  process.argv[2]='supersecret';
    process.argv[3]='8081';
    process.argv[4]='8082';
// 	process.exit();
}

var stream_secret = process.argv[2];//密码
var stream_port = process.argv[3] || 8081;//ffpeng推送端口
var websocket_port = process.argv[4] || 8082;//前端websocket端口 ，比如：8082
var record_stream = false;
var totalSize = 0;

function initWebSocket(websocket_port) {
	var clientMap = new Map();//缓存，实现多个视频流同时播放的问题
	
	var socketServer = new WebSocket.Server({
		port : websocket_port,
		perMessageDeflate : false
	});
	socketServer.on('connection', function(socket, upgradeReq) {
		var url = upgradeReq.socket.remoteAddress + upgradeReq.url;
		var key = url.substr(1).split('/')[1];//key就是通过url传递过来的标识比如:(ws://127.0.0.1:8082/live3)其中live3就是这个标识，其他的流可随机生成其他的字符串
		var clients = clientMap.get(key);
		if(!clients){
			clients = new Set();
			clientMap.set(key,clients);
		}
		clients.add(socket);
		totalSize++;
		process.stdout.write("[INFO]:a new connection, the current number of connections: " + totalSize + ".\r");
		socket.on('close', function(code, message) {
			var clientSet = clientMap.get(key);
			if(clientSet){
				clientSet.delete(socket);
				totalSize--;
				if(clientSet.size == 0){
					clientMap.delete(key);
				}
			}
			process.stdout.write("[INFO]:close a connection, the current number of connections:" + totalSize + ".\r");
		});
	});

	socketServer.broadcast = function(data, theme) {
		var clients = clientMap.get(theme);
		if (clients) {
			clients.forEach(function (client, set) {
				if(client.readyState === WebSocket.OPEN){
					client.send(data);
				}
			});
		}
	};
	return socketServer;
}

function initHttp(stream_port, stream_secret, record_stream, socketServer) {
	var streamServer = http.createServer(
			function(request, response) {
				var params = request.url.substr(1).split('/');
				if (params.length != 2) {
					process.stdout.write("\n[ERROR]:Incorrect parameters, enter password and push theme");
					response.end();
				}
				if (params[0] !== stream_secret) {
					process.stdout.write("\n[ERROR]:Password error: "+request.socket.remoteAddress+":"+request.socket.remotePort+"");
					response.end();
				}
				response.connection.setTimeout(0);
				request.on('data', function(data) {
					socketServer.broadcast(data, params[1]);
					if (request.socket.recording) {
						request.socket.recording.write(data);
					}
				});
				request.on('end', function() {
					process.stdout.write("\n[INFO]:close request");
					if (request.socket.recording) {
						request.socket.recording.close();
					}
				});
				if (record_stream) {
					var path = 'recordings/' + Date.now() + '.ts';
					request.socket.recording = fs.createWriteStream(path);
				}
			}).listen(stream_port);
			console.log('started rtsp WebSocket service in secret is [%s], service port is [%s], ws port is [%s].',stream_secret,stream_port,websocket_port);
}

initHttp(stream_port, stream_secret, record_stream,
		initWebSocket(websocket_port));

执行ffmpeg(封装run.js)

我把ffmpeg命令封装成js文件，以方便执行多条命令。 
require('shelljs/global');

var version = exec('node --version', {silent:true}).output;

exec(`ffmpeg -i "rtsp://admin:px123456@192.168.3.21:554/Streaming/Channels/101" -q 0 -f mpegts -codec:v mpeg1video -s 1680x945 http://127.0.0.1:8081/supersecret/live1`, function(status, output) {
  console.log('Exit status:', status);
  console.log('Program output:', output);
});
exec(`ffmpeg -i "rtsp://admin:px123456@192.168.3.21:554/Streaming/Channels/101" -q 0 -f mpegts -codec:v mpeg1video -s 1680x945 http://127.0.0.1:8081/supersecret/live2`, function(status, output) {
  console.log('Exit status:', status);
  console.log('Program output:', output);
});
exec(`ffmpeg -i "rtsp://admin:px123456@192.168.3.21:554/Streaming/Channels/101" -q 0 -f mpegts -codec:v mpeg1video -s 1680x945 http://127.0.0.1:8081/supersecret/live3`, function(status, output) {
  console.log('Exit status:', status);
  console.log('Program output:', output);
});
exec(`ffmpeg -i "rtsp://admin:px123456@192.168.3.21:554/Streaming/Channels/101" -q 0 -f mpegts -codec:v mpeg1video -s 1680x945 http://127.0.0.1:8081/supersecret/live4`, function(status, output) {
  console.log('Exit status:', status);
  console.log('Program output:', output);
});

创建index.html

需要使用 jsmpeg.js插件
页面要运行到服务器中! 
<!DOCTYPE html>
<html>
<head>
	<title></title>
	<style type="text/css">
		html, body {
			text-align: center;
		}
	</style>
	
</head>
<body>
	<canvas id="video-canvas"></canvas>
	<canvas id="video-canvas1"></canvas>
	<canvas id="video-canvas2"></canvas>
	<canvas id="video-canvas3"></canvas>
	
	<script type="text/javascript" src="jsmpeg.min.js"></script>
	<script type="text/javascript">
		var canvas = document.getElementById('video-canvas');
		var url = 'ws://ip:8082/live1';
		var player = new JSMpeg.Player(url, {
		    canvas: canvas,
		});
		console.log(player)
		
		var canvas1 = document.getElementById('video-canvas1');
		var url1 = 'ws://ip:8082/live2';
		var player1 = new JSMpeg.Player(url1, {canvas: canvas1});

		var canvas2 = document.getElementById('video-canvas2');
		var url2 = 'ws://ip:8082/live3';
		var player2 = new JSMpeg.Player(url2, {canvas: canvas2});

		var canvas3 = document.getElementById('video-canvas3');
		var url3 = 'ws://ip:8082/live4';
		var player3 = new JSMpeg.Player(url3, {canvas: canvas3});
		
	</script>
</body>
</html>

原文链接 3种ffmpeg-web端视频直播推流方案 - 掘金

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