C#(asp.net)上传视频截图

using System;using System.Collections.Generic;using System.Text;using System.Diagnostics;namespace YMHEdu.Utility{ public static class VideoCut { #region 公共属性 /// <summary> /// 工具所在路径 /// </summary> public static string ToolsPath { get; set; } /// <summary> /// 截图起始时间段 格式 00:00:06 /// </summary> public static string StartPoint { get; set; } /// <summary> /// 截图长度 /// </summary> public static int CutImgWidth { get; set; } /// <summary> /// 截图宽度 /// </summary> public static int CutImgHeight { get; set; } /// <summary> /// 截图文件格式 /// </summary> public static string CutImgExtend { get; set; } #endregion static VideoCut() { ToolsPath = System.Web.HttpContext.Current.Server.MapPath("~/Tools/ffmpeg.exe"); StartPoint = "00:00:06"; CutImgWidth = 500; CutImgHeight = 400; CutImgExtend = ".jpg"; } public static bool Save(string strFullVideoFile) { //截图保存在同文件夹下面.名称仅扩展名不同 string strOutputImg = strFullVideoFile.Substring(0, strFullVideoFile.LastIndexOf(".")) + CutImgExtend; return Save(strFullVideoFile, strOutputImg); } /// <summary> /// 保存截图 /// </summary> /// <param name="strFullFileName"></param> public static bool Save(string strFullVideoFile, string strFullOutputImg) { return ExeCommand(ToolsPath + " -i " + strFullVideoFile + " -y -f image2 -ss " + StartPoint + " -t 0.001 -s " + CutImgWidth + "x" + CutImgHeight + " " + strFullOutputImg); } public static bool ExeCommand(string commandText) { return ExeCommand(new string[] { commandText }); } public static bool ExeCommand(string[] commandTexts) { Process p = new Process(); p.StartInfo.FileName = "cmd.exe"; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardInput = true; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardError = true; p.StartInfo.CreateNoWindow = true; try { p.Start(); foreach (string item in commandTexts) { p.StandardInput.WriteLine(item); } p.StandardInput.WriteLine("exit"); //strOutput = p.StandardOutput.ReadToEnd(); p.WaitForExit(); p.Close(); return true; } catch (Exception e) { return false;//strOutput = e.Message; } } }}

调用方法：
private void SavePrevImg(string strSource, string strPrevImg) { YMHEdu.Utility.VideoCut.CutImgExtend = ".jpg"; YMHEdu.Utility.VideoCut.CutImgHeight = 400; YMHEdu.Utility.VideoCut.CutImgWidth = 500; YMHEdu.Utility.VideoCut.StartPoint = "00:00:06"; //从第6秒开始截取 截取一帧 YMHEdu.Utility.VideoCut.ToolsPath = Server.MapPath("/Tools/ffmpeg.exe"); //截取工具 YMHEdu.Utility.VideoCut.Save(strSource, strPrevImg); }</textarea >