using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Configuration;namespace VideoToFLV{ public class PublicMethod:System.Web.UI.Page { public PublicMethod() { } //文件路径 public static string ffmpegtool = ConfigurationManager.AppSettings["ffmpeg"]; public static string mencodertool = ConfigurationManager.AppSettings["mencoder"]; public static string mplayertool = ConfigurationManager.AppSettings["mplayer"]; 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:\51aspx\ffmpeg.exe" /> string ffmpeg = Server.MapPath(PublicMethod.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 = PublicMethod.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 CatchImg(fileName, imgFile); //System.Diagnostics.Process.Start(ImgstartInfo); } catch { return ""; } // return ""; } // public string CatchImg(string fileName,string imgFile) { // string ffmpeg = Server.MapPath(PublicMethod.ffmpegtool); // string flv_img =imgFile+".jpg"; // string FlvImgSize = PublicMethod.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 //运行FFMpeg的视频解码，(这里是(虚拟)相对路径) /// <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:\51aspx\ffmpeg.exe" /> string ffmpeg = Server.MapPath(PublicMethod.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 = PublicMethod.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 //运行mencoder的视频解码器转换(这里是(绝对路径)) public string MChangeFilePhy(string vFileName, string playFile, string imgFile) { string tool = Server.MapPath(PublicMethod.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 = PublicMethod.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); CatchImg(flv_file, imgFile); } catch { return ""; } // return ""; } #endregion
}}
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