c语言俄罗斯代码解析(C截屏mp4)

目的:实现在winfrom中,用代码实现截屏mp4视频,生成以时间为后缀的图片。

界面图如下:

c语言俄罗斯代码解析(C截屏mp4)(1)

界面图

c语言俄罗斯代码解析(C截屏mp4)(2)

截屏成功后,提示图

在代码操作前,先如下图操作:

c语言俄罗斯代码解析(C截屏mp4)(3)

操作图

1、将ffmpeg.exe这个控件放到根目录下,一般为WindowsFormsApplication名字\bin\Debug\ 下

2、此为截屏后生成的照片,暂不管(也可以代码自己修改保存路径)

3、此为需要被截屏的视频存放位置(也可以代码自己修改,视频读取路径)

下面为代码实现的操作:

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Diagnostics; using System.IO; namespace WindowsFormsApplication9 { public partial class Form1 : Form { public Form1() { InitializeComponent(); readPic(); } string cutTime = ""; string PicPath0 = string.Format("{0}jietu.jpg", AppDomain.CurrentDomain.BaseDirectory); private void button1_Click(object sender, EventArgs e) { string name = string.Format("{0}测试.mp4", AppDomain.CurrentDomain.BaseDirectory); double time = axWindowsMediaPlayer1.Ctlcontrols.currentPosition; cutTime = time.ToString(); if (time < 100 && time >= 10) { cutTime = string.Format("0{0}",time); } else if (time < 10) { cutTime = string.Format("00{0}", time); } string cutImagePath = GetPicFromVideo(name, cutTime); if (File.Exists(cutImagePath)) { MessageBox.Show(@"图片截取成功!"); } else { MessageBox.Show(@"图片截取失败!"); } } private void readPic() { string a = string.Format("{0}测试.mp4", AppDomain.CurrentDomain.BaseDirectory); axWindowsMediaPlayer1.URL = a; axWindowsMediaPlayer1.uiMode = "Full"; int playState = (int)axWindowsMediaPlayer1.playState; } public string videoPath = string.Format("{0}测试.mp4", AppDomain.CurrentDomain.BaseDirectory); public string GetPicFromVideo(string VideoName, string CutTimeFrame) { videoPath = get_uft8(videoPath); string ffmpeg = string.Format("{0}ffmpeg.exe", AppDomain.CurrentDomain.BaseDirectory); string saveImgPath = System.IO.Path.ChangeExtension(PicPath0, "-" cutTime.Replace(":", ":") ".jpg"); saveImgPath = get_uft8(saveImgPath); string saveImgSize = "852x480"; ProcessStartInfo startInfo = new ProcessStartInfo(ffmpeg); startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; startInfo.Arguments = string.Format(" -i \"{0}\" -y -f image2 -ss {1} -t 0.001 -s \"{2}\" \"{3}\"", videoPath, cutTime, saveImgSize, saveImgPath); startInfo.CreateNoWindow = true; startInfo.UseShellExecute = false; System.Diagnostics.Process p = new Process(); p.StartInfo = startInfo; p.Start(); p.WaitForExit(); return saveImgPath; } public string get_uft8(string unicodeString) { UTF8Encoding utf8 = new UTF8Encoding(); Byte[] encodedBytes = utf8.GetBytes(unicodeString); String decodedString = utf8.GetString(encodedBytes); return decodedString; } } }

编译后,点击button就行了。

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