最近有个C#项目要播放本地视频，想想还是用EmguCV较为方便，然后发现了EmguCV的内存管理问题，在播放视频的过程中，内存在一直增加，以为应该有个释放内存的函数啥的，但是在网上搜索半天没有找到结果。于是自己摸索着增加了个垃圾强制回收GC.Collect()，没想到问题就解决了，播放视频内存稳稳的，不再增长，应用到项目中一切正常。

      大家有没有遇到这个问题呢？

      以下是一段测试代码，大家可以试试看是不是这样

using Emgu.CV;
using System;
using System.Diagnostics;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;

namespace WindowsFormsApp4
{
    public partial class Form1 : Form
    {
        Emgu.CV.VideoCapture vc=null;
        Bitmap bitmap;
        int fps = 25;

        public Form1()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 打开文件开始播放
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.Filter = "视频文件(*.mp4;*.avi)|*.MP4;*.avi";
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                if (vc != null && vc.IsOpened)
                    vc.Dispose();
                vc = new Emgu.CV.VideoCapture(openFileDialog.FileName);
                fps = (int)vc.GetCaptureProperty(Emgu.CV.CvEnum.CapProp.Fps);
                Thread thread = new Thread(VideoPlayThread);
                thread.Start();
            }
        }

        /// <summary>
        /// 播放线程
        /// </summary>
        private void VideoPlayThread()
        {
            Stopwatch sw = new Stopwatch();
            while (true)
            {
                sw.Restart();
                Mat mat  = vc.QueryFrame();
                this.Invoke((Action)delegate
                {
                    pictureBox1.Image = mat.Bitmap;
                });
                GC.Collect(); //强制进行垃圾回收
                sw.Stop();
                long time = 1000 / fps - sw.ElapsedMilliseconds;
                if (time > 0)
                    Thread.Sleep((int)time);
            }
        }
    }
}