MadieHelper.cs代码,CSharp代码库,德仔网

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【CSharp】 MadieHelper.cs
作者:Ingram / 发布于2016/1/8/ 1064

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Configuration;

	namespace Common
	{
	 public class MadieHelper : System.Web.UI.Page
	 {
	 //文件路径
	 public static string ffmpegtool = ConfigurationManager.AppSettings["ffmpeg"];
	 public static string mencodertool = ConfigurationManager.AppSettings["mencoder"];
	 public static string upFile = ConfigurationManager.AppSettings["upfile"] + "/";
	 public static string imgFile = ConfigurationManager.AppSettings["imgfile"] + "/";
	 public static string playFile = ConfigurationManager.AppSettings["playfile"] + "/";
	 //文件图片大小
	 public static string sizeOfImg = ConfigurationManager.AppSettings["CatchFlvImgSize"];
	 //文件大小
	 public static string widthOfFile = ConfigurationManager.AppSettings["widthSize"];
	 public static string heightOfFile = ConfigurationManager.AppSettings["heightSize"];
	 // // //获取文件的名字
	 public static string GetFileName(string fileName)
	 {
	 int i = fileName.LastIndexOf("//") + 1;
	 string Name = fileName.Substring(i);
	 return Name;
	 }
	 //获取文件扩展名
	 public static string GetExtension(string fileName)
	 {
	 int i = fileName.LastIndexOf(".") + 1;
	 string Name = fileName.Substring(i);
	 return Name;
	 }
	 //
	 #region //运行FFMpeg的视频解码，(这里是绝对路径)
	 /// <summary>
	 /// 转换文件并保存在指定文件夹下面(这里是绝对路径)
	 /// </summary>
	 /// <param name="fileName">上传视频文件的路径（原文件）</param>
	 /// <param name="playFile">转换后的文件的路径（网络播放文件）</param>
	 /// <param name="imgFile">从视频文件中抓取的图片路径</param>
	 /// <returns>成功:返回图片虚拟地址; 失败:返回空字符串</returns>
	 public string ChangeFilePhy(string fileName, string playFile, string imgFile)
	 {
	 //取得ffmpeg.exe的路径,路径配置在Web.Config中,如:<add key="ffmpeg" value="E:/aspx1/ffmpeg.exe" />
	 string ffmpeg = Server.MapPath(ffmpegtool);
	 if ((!System.IO.File.Exists(ffmpeg)) || (!System.IO.File.Exists(fileName)))
	 {
	 return "";
	 }
	 //获得图片和(.flv)文件相对路径/最后存储到数据库的路径,如:/Web/User1/00001.jpg
	 string flv_file = System.IO.Path.ChangeExtension(playFile, ".flv");

	 //截图的尺寸大小,配置在Web.Config中,如:<add key="CatchFlvImgSize" value="240x180" />
	 string FlvImgSize =sizeOfImg;
	 System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
	 FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
	 FilestartInfo.Arguments = " -i " + fileName + " -ab 56 -ar 22050 -b 500 -r 15 -s " + widthOfFile + "x" + heightOfFile + " " + flv_file;
	 //ImgstartInfo.Arguments = " -i " + fileName + " -y -f image2 -t 0.05 -s " + FlvImgSize + " " + flv_img;
	 try
	 {
	 //转换
	 System.Diagnostics.Process.Start(FilestartInfo);
	
	 //截图
	 return CatchImg(fileName, imgFile);
	 //System.Diagnostics.Process.Start(ImgstartInfo);
	 }
	 catch
	 {
	 return "";
	 }
	
	 }
	 //
	 public string CatchImg(string fileName, string imgFile)
	 {
	 //
	 string ffmpeg = Server.MapPath(ffmpegtool);
	 //
	 string flv_img = imgFile + ".jpg";
	 //
	 string FlvImgSize = sizeOfImg;
	 //
	 System.Diagnostics.ProcessStartInfo ImgstartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
	 ImgstartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
	 //
	 ImgstartInfo.Arguments = " -i " + fileName + " -y -f image2 -ss 2 -vframes 1 -s " + FlvImgSize + " " + flv_img;
	 try
	 {
	 System.Diagnostics.Process.Start(ImgstartInfo);
	 }
	 catch
	 {
	 return "";
	 }
	 //
	 if (System.IO.File.Exists(flv_img))
	 {
	 return flv_img;
	 }
	 return "";
	 }
	 #endregion
	 //
	 #region
	 /// <summary>
	 /// 转换文件并保存在指定文件夹下面(这里是相对路径)
	 /// </summary>
	 /// <param name="fileName">上传视频文件的路径（原文件）</param>
	 /// <param name="playFile">转换后的文件的路径（网络播放文件）</param>
	 /// <param name="imgFile">从视频文件中抓取的图片路径</param>
	 /// <returns>成功:返回图片虚拟地址; 失败:返回空字符串</returns>
	 public string ChangeFileVir(string fileName, string playFile, string imgFile)
	 {
	 //取得ffmpeg.exe的路径,路径配置在Web.Config中,如:<add key="ffmpeg" value="E:/aspx1/ffmpeg.exe" />
	 string ffmpeg = Server.MapPath(ffmpegtool);
	 if ((!System.IO.File.Exists(ffmpeg)) || (!System.IO.File.Exists(fileName)))
	 {
	 return "";
	 }
	 //获得图片和(.flv)文件相对路径/最后存储到数据库的路径,如:/Web/User1/00001.jpg
	 string flv_img = System.IO.Path.ChangeExtension(Server.MapPath(imgFile), ".jpg");
	 string flv_file = System.IO.Path.ChangeExtension(Server.MapPath(playFile), ".flv");

	 //截图的尺寸大小,配置在Web.Config中,如:<add key="CatchFlvImgSize" value="240x180" />
	 string FlvImgSize = sizeOfImg;
	 System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
	 System.Diagnostics.ProcessStartInfo ImgstartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
	 FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
	 ImgstartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
	 //此处组合成ffmpeg.exe文件需要的参数即可,此处命令在ffmpeg 0.4.9调试通过
	 //ffmpeg -i F:/01.wmv -ab 56 -ar 22050 -b 500 -r 15 -s 320x240 f:/test.flv
	 FilestartInfo.Arguments = " -i " + fileName + " -ab 56 -ar 22050 -b 500 -r 15 -s " + widthOfFile + "x" + heightOfFile + " " + flv_file;
	 ImgstartInfo.Arguments = " -i " + fileName + " -y -f image2 -t 0.001 -s " + FlvImgSize + " " + flv_img;
	 try
	 {
	 System.Diagnostics.Process.Start(FilestartInfo);
	 System.Diagnostics.Process.Start(ImgstartInfo);
	 }
	 catch
	 {
	 return "";
	 }
	 /**/
	 ///注意:图片截取成功后,数据由内存缓存写到磁盘需要时间较长,大概在3,4秒甚至更长;
	 ///这儿需要延时后再检测,我服务器延时8秒,即如果超过8秒图片仍不存在,认为截图失败;
	 ///此处略去延时代码.如有那位知道如何捕捉ffmpeg.exe截图失败消息,请告知,先谢过!
	 if (System.IO.File.Exists(flv_img))
	 {
	 return flv_img;
	 }
	 return "";
	 }
	 #endregion
	 #region
	 /// <summary>
	 /// 运行mencoder的视频解码器转换(这里是(绝对路径))
	 /// </summary>
	 /// <param name="vFileName"></param>
	 /// <param name="playFile"></param>
	 /// <param name="imgFile"></param>
	 /// <returns></returns>
	 public string MChangeFilePhy(string vFileName, string playFile, string imgFile)
	 {
	 string tool = Server.MapPath(mencodertool);
	 //string mplaytool = Server.MapPath(PublicMethod.ffmpegtool);
	 if ((!System.IO.File.Exists(tool)) || (!System.IO.File.Exists(vFileName)))
	 {
	 return "";
	 }
	 string flv_file = System.IO.Path.ChangeExtension(playFile, ".flv");

	 //截图的尺寸大小,配置在Web.Config中,如:<add key="CatchFlvImgSize" value="240x180" />
	 string FlvImgSize =sizeOfImg;
	 System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(tool);
	 FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
	 FilestartInfo.Arguments = " " + vFileName + " -o " + flv_file + " -of lavf -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=200:mbd=2:mv0:trell:v4mv:cbp:last_pred=1:dia=-1:cmp=0:vb_strategy=1 -vf scale=" + widthOfFile + ":" + heightOfFile + " -ofps 12 -srate 22050";
	 try
	 {
	 System.Diagnostics.Process.Start(FilestartInfo);
	 return CatchImg(flv_file, imgFile);
	 }
	 catch
	 {
	 return "";
	 }
	 }
	 #endregion
	 }
	}
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