C# OpenCvSharp读取rtsp流录制mp4可分段保存

软件界面：

测试环境：

VS2019

.NET Framework 4.7.2

OpencvSharp4.8.0

输入RTSP流地址即可拉取RTSP流，支持抓拍和录制RTSP流视频，且支持支持按固定时间保存，比如我想5分钟保存一个视频，设置保存间隔为300，代码已经封装成类模块，调用十分简单，代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using FIRC;
using OpenCvSharp;

namespace RtspDemo
{
    public partial class Form1 : Form
    {
        RtspManager rm = new RtspManager();
        bool startRecordVideo = false;
        int totalSaveFrameCount = 0;
        VideoManager vm = null;
        int startIndex = 0;

        public Form1()
        {
            InitializeComponent();
            CheckForIllegalCrossThreadCalls = false;
        }

        private void btn_connect_Click(object sender, EventArgs e)
        {
            if(btn_connect.Text=="连接")
            {
                if (string.IsNullOrEmpty(tb_rtsp.Text))
                {
                    tssl_show.Text = "rtsp流地址错误!";
                    return;
                }
                rm.Connect(tb_rtsp.Text);
                if (rm.Connected)
                {
                    tssl_show.Text = "连接成功";
                    btn_connect.Text = "停止";
                    rm.Start();
                }
                else
                {
                    tssl_show.Text = "连接失败";
                }

            }
            else
            {
                rm.Stop();
                rm.DisConnect();
                btn_connect.Text = "连接";
                tssl_show.Text = "连接中断!";
            }
           

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            
            rm.GetImage += Rm_GetImage;
            rm.GetStatus += Rm_GetStatus;
        }

        private void Rm_GetStatus(string msg)
        {
            if(msg=="disconnect")
            {
                btn_connect.Text = "连接";
                btn_video.Text = "开始录像";
                vm.Dispose();
            }
        }

        private void Rm_GetImage(OpenCvSharp.Mat frame)
        {
            if(startRecordVideo)
            {
                startIndex++;
                if(startIndex>=totalSaveFrameCount)
                {
                    startIndex = 0;
                    var saveFile = GetTimeString() + ".mp4";
                    vm = new VideoManager(saveFile, FourCC.MP4V, rm.Fps, rm.Width, rm.Height);
                }
                vm.WriteFrame(frame);
            }
            pictureBox1.Image = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(frame);
        }

        public string GetTimeString()
        {
            return DateTime.Now.ToString("yyyyMMdd-HHmmss_fff");
        }
        private void btn_pic_Click(object sender, EventArgs e)
        {
            if(pictureBox1.Image!=null)
            {
                var saveFile = GetTimeString() + ".jpg";
                pictureBox1.Image.Save(saveFile,ImageFormat.Jpeg);
                tssl_show.Text = "抓拍成功,保存为" + saveFile;
            }
        }

        private void btn_video_Click(object sender, EventArgs e)
        {
            if(btn_video.Text=="开始录像")
            {
                if(btn_connect.Text=="连接")
                {
                    tssl_show.Text = "请先连接RTSP流!";
                    return;
                }
                btn_video.Text = "停止录像";
                btn_video.Update();
                Task.Run(() => {
                totalSaveFrameCount = Convert.ToInt32(tb_interval.Text) * rm.Fps;
                startIndex = 0;
                var saveFile = GetTimeString() + ".mp4";
                vm = new VideoManager(saveFile,FourCC.MP4V,rm.Fps,rm.Width,rm.Height);
                startRecordVideo = true;
               
                });

            }
            else
            {
                vm.Dispose();
                startRecordVideo = false;
                btn_video.Text ="开始录像";
            }
        }
    }
}

视频演示：

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