简单的描述下写这个软件的背景吧。之前短视频平台很火的时候，相信很多人都想进去分一杯羹，俺当然也不能免俗，但是人丑家穷又没才艺，咋办呢？看到别人有只发文字啥的一些视频加点背景音乐也能看，想着，Wo Cao？，这我也行啊， I Can I Up。但是让我天天去找素材剪辑视频啥的，那肯定干不来，毕竟程序员是需要加班的，所以，这个粗糙的程序就诞生了，当然我也没怎么用，发了两篇觉得不好玩。就没再玩了。.
后来通过种种途径吧，才知道短视频背后的产业相当复杂，一个视频能不能火基本不在于视频本身。
这个软件主要是基于录屏功能来实现的，不过是一键式的罢了，当然实现录屏我们用了第三方的插件：AForge。项目需要的DLL如下图：
实现功能：
- 利用录屏功能录制语句的生成过程，并保存成视频格式
开发环境：
- 开发工具：Visual Studio 2013
- .NET Framework版本：4.5
实现代码：
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();
}
}
实现效果：
