C#实现文字视频生成器的示例代码

  public class RecordingUtil
    {
        VideoFileWriter vfWriter = new VideoFileWriter();
        ScreenCaptureStream scStream = null;
 
        readonly Rectangle Rect;
        public RecordingUtil(Rectangle rect, int interval = 40)
        {
            Rect = rect;
            scStream = new ScreenCaptureStream(rect, interval);
            scStream.NewFrame += (s, e1) =>
            {
                vfWriter.WriteVideoFrame(e1.Frame);
            };
        }
 
        public void Start(string savePath, int Rate = 4000 * 1024)
        {
            vfWriter.Open(savePath, Rect.Width, Rect.Height, 25, VideoCodec.MPEG4, 4000 * 1024);
            scStream.Start();
        }
 
        public void Stop()
        {
            if (scStream != null && scStream.IsRunning)
            {
                scStream.Stop();
            }
            if (vfWriter.IsOpen)
            {
                vfWriter.Close();
            }
        }
 
    }

 private void btnCreate_Click(object sender, EventArgs e)
        {
 
            checkNull();
            btnCreate.Text = "正在生成";
            btnCreate.Enabled = false;
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "视频文件|*.MP4";
            if (sfd.ShowDialog() == DialogResult.OK)
            {
                Point point = new Point(this.Location.X + 5, this.Location.Y + 25);
                Size size = new Size(splitContainer1.Panel1.Width % 2 == 1 ? splitContainer1.Panel1.Width - 1 : splitContainer1.Panel1.Width, splitContainer1.Panel1.Height % 2 == 1 ? splitContainer1.Panel1.Height - 1 : splitContainer1.Panel1.Height);
 
                Rectangle rect = new Rectangle(point, size);
                RecordingUtil Recording = new RecordingUtil(rect);
                Recording.Start(sfd.FileName);
                createText(txtWord.Text);
                Recording.Stop();
            }
            btnCreate.Text = "生 成";
            btnCreate.Enabled = true;
        
        }
 
        private void btnPreview_Click(object sender, EventArgs e)
        {
 
            checkNull();
            btnPreview.Text = "正在预览";
            btnPreview.Enabled = false;
            createText(txtWord.Text);
            btnPreview.Text = "预 览";
            btnPreview.Enabled = true;
        }
 
        private void checkNull()
        {
            if (string.IsNullOrWhiteSpace(txtWord.Text))
            {
                toolTip1.Hide(txtWord);
                toolTip1.Show("不可为空！", txtWord, 5, -60, 2000);
                return;
            }
        }
 
        private void createText(string text)
        {
            Graphics g = splitContainer1.Panel1.CreateGraphics();
            g.Clear(splitContainer1.Panel1.BackColor);
            Font font = new Font("华文行楷", 25);
            // Brush whiteBrush = new SolidBrush(Color.FromArgb(0, 192, 0));
            Brush whiteBrush = new SolidBrush(Color.Black);
            int x = 0, y = 0;
            string[] arr = txtWord.Text.Split('\n');
            for (int i = 0; i < arr.Length; i++)
            {
                x = 40 * i + 15;
                for (int j = 0; j < arr[i].Length; j++)
                {
                    y = 40 * j + 15;
                    g.DrawString(arr[i][j].ToString(), font, whiteBrush, x, y);
                    Delay(300);
                }
            }
        }
 
        private void Delay(double mm)
        {
            DateTime now = DateTime.Now;
            while (DateTime.Now.AddMilliseconds(-mm) <= now)
            {
                Application.DoEvents();
            }
        }