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Unity3d 实现直播功能(无需sdk接入)

news 2025/8/3 21:09:26

Unity3d 实现直播功能

需要插件 :VideoCapture 插件地址(免费的就行)
原理:客户端通过 VideoCapture 插件实现推流+nodejs视频流转服务进行转发,播放器实现rtmp拉流
废话不多说,直接上
场景对象挂上VideoCapture组件

CaptureSource我选择的是屏幕录制,也可以是其他源
CaptureType选择LIVE–直播形式
LiveStreamUrl选择自己本地服务地址例如 rtmp://localhost:1935/live/unity //localhost也可以切换外网推流服务器地址

推流服务器

//  index.js 
const NodeMediaServer = require('node-media-server');const config = {rtmp: {port: 1935,//rtmp服务端口号chunk_size: 60000,gop_cache: true,ping: 30,ping_timeout: 60},http: {port: 8000,//http服务端口号,拉流用的allow_origin: '*'}
};var nms = new NodeMediaServer(config)
nms.run();

一个简单的nodejs服务,需提前安装依赖包

npm install node-media-server --save

安装完成后,命令行进入到 index.js所在目录执行

node index.js

命令,看到下图即为成功

服务运行成功
运行unity项目,点击 StartCapture

开启直播
打开拉流软件VLC(下载地址)
效果如下:
运行效果

视频效果如下

unity视频直播效果

unity直接起本地推流拉流服务代码(Editor使用,出包需要改地址和配合拷贝文件)


using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using UnityEngine;
//Editor完美运行,出包需要另外设置地址杀死nodejs推流程序
public class StartNodeJsServer : MonoBehaviour
{private void Start(){StartServer();}public void StartServer(){// create the command-line processvar cmdProcess = new Process{StartInfo ={FileName = "cmd.exe",UseShellExecute = false,CreateNoWindow = true, // this is probably optionalErrorDialog = false, // this is probably optionalRedirectStandardOutput = true,RedirectStandardInput = true}};// register for the output (for reading the output)cmdProcess.OutputDataReceived += (object sender, DataReceivedEventArgs e) =>{string output = e.Data;// inspect the output text here ...};// start the cmd processcmdProcess.Start();cmdProcess.BeginOutputReadLine();// execute your command//cmdProcess.StandardInput.WriteLine("npm install node-media-server --save");//服务器文件放到Assets目录下面的server内,出包的时候此处需要修改cmdProcess.StandardInput.WriteLine("node " + Application.dataPath + "/server/index.js");UnityEngine.Debug.LogError("node " + Application.dataPath + "/server/index.js");GameManager.Instance.nodeServerStarted = true;}public dynamic RunCmd(string cmd, bool isReturnStreamReader = false){Process pro = new Process();pro.StartInfo.FileName = "cmd.exe";pro.StartInfo.CreateNoWindow = true;         // 不创建新窗口    pro.StartInfo.UseShellExecute = false;       //不启用shell启动进程  pro.StartInfo.RedirectStandardInput = true;  // 重定向输入    pro.StartInfo.RedirectStandardOutput = true; // 重定向标准输出    pro.StartInfo.RedirectStandardError = true;pro.StartInfo.StandardErrorEncoding = System.Text.UTF8Encoding.UTF8;pro.StartInfo.StandardOutputEncoding = System.Text.UTF8Encoding.UTF8;// 重定向错误输出  // pro.StartInfo.WorkingDirectory = path;pro.Start();//开启cmdpro.StandardInput.WriteLine(cmd);pro.StandardInput.AutoFlush = true;pro.StandardInput.WriteLine("exit"); //若是运行时间短可加入此命令dynamic output;if (isReturnStreamReader){output = pro.StandardOutput;}else{output = pro.StandardOutput.ReadToEnd();}pro.WaitForExit();//若运行时间长,使用这个,等待程序执行完退出进程pro.Close();return output;}public List<string> GetPidOfAddress(string address){//用来保存所有对应地址的端口号数据List<string> valueList = new List<string>();//获取返回的StreamReader数据StreamReader sr = RunCmd($"netstat -aon|findstr {address}", true);//读取StreamReader的每一行数据while (!sr.EndOfStream){string value = sr.ReadLine();//查看当前读取的行中内容是否包含TCP字符if (!string.IsNullOrEmpty(value) && value.Contains("TCP")){//只获取状态为 LISTENING 的数据string[] ss = value.Split("LISTENING");//获取端口号数据信息if (ss.Length >= 2){string port = ss[ss.Length - 1].Trim();//重复的端口号不加入结果列表中if (valueList.FirstOrDefault(a => a == port) == null)valueList.Add(port);}}}return valueList;}/// <summary>/// 根据PID杀死对应进程/// </summary>/// <param name="pid"></param>/// <returns></returns>public string KillTask(string pid){return RunCmd($"taskkill /F /pid {pid}");}private void OnApplicationQuit()//退出程序杀死直播服务{List<string> address = GetPidOfAddress("1935");address.ForEach((s) =>{KillTask(s);});}
}

网页查看视频效果

<!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: 100%;" controls="controls"></video><script>if (flvjs.isSupported()) {var videoElement = document.getElementById('videoElement');var flvPlayer = flvjs.createPlayer({type: 'flv',url:'http://localhost:8000/live/unity.flv' //这里走的http拉视频,所以用端口号8000});flvPlayer.attachMediaElement(videoElement);flvPlayer.load();flvPlayer.play();}</script></body>
</html>