mencoder和ffmpeg 转换视频格式以及 视频截图功能

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;public partial class _Default : System.Web.UI.Page { // 扩展名定义 string[] strArrFfmpeg = new string[] {"asf","avi","mpg","3gp","mov" }; string[] strArrMencoder = new string[] {"wmv","rm","rmvb" }; protected void Page_Load(object sender, EventArgs e) { } // protected void btnUpload_Click(object sender, EventArgs e) { string upFileName = ""; if (this.FileUpload1.HasFile) { string fileName = PublicMethod.GetFileName(this.FileUpload1.FileName);// GetFileName(); if ((string)Session["file"] == fileName) { return; } upFileName = Server.MapPath(PublicMethod.upFile fileName); this.FileUpload1.SaveAs(upFileName); string saveName = DateTime.Now.ToString("yyyyMMddHHmmssffff") ; string playFile = Server.MapPath(PublicMethod.playFile saveName); string imgFile = Server.MapPath(PublicMethod.imgFile saveName); //System.IO.File.Copy(Server.MapPath(PublicMethod.playFile "00000002.jpg"), Server.MapPath(PublicMethod.imgFile "aa.jpg")); PublicMethod pm = new PublicMethod(); string m_strExtension = PublicMethod.GetExtension(this.FileUpload1.PostedFile.FileName).ToLower(); if (m_strExtension == "flv") {//直接拷贝到播放文件夹下 System.IO.File.Copy(upFileName, playFile ".flv"); pm.CatchImg(upFileName, imgFile); } string Extension = CheckExtension(m_strExtension); if (Extension == "ffmpeg") { 　pm.ChangeFilePhy(upFileName, playFile, imgFile); } else if (Extension == "mencoder") { pm.MChangeFilePhy(upFileName, playFile, imgFile); } InsertData(this.txtTitle.Text, fileName,saveName); Session["file"] = fileName; } } //删除视频 protected void btnDelete_Click(object sender, EventArgs e) { LinkButton btnlink = (LinkButton)sender; string FID=btnlink.CommandArgument; string sqlstr = "delete from Media where FID=@FID"; SqlDataSource1.DeleteCommand = sqlstr; SqlDataSource1.DeleteCommandType = SqlDataSourceCommandType.Text; SqlDataSource1.DeleteParameters.Add("FID",FID); SqlDataSource1.Delete(); } // private string CheckExtension(string extension) { string m_strReturn = ""; foreach (string var in this.strArrFfmpeg) { if (var == extension) { m_strReturn = "ffmpeg"; break; } } if (m_strReturn == "") { foreach (string var in strArrMencoder) { if (var == extension) { m_strReturn = "mencoder"; break; } } } return m_strReturn; } #region 插入数据到数据库中 private void InsertData(string MediaName,string fileName,string saveName) { //string name=fileName.Substring(0, fileName.LastIndexOf('.')); string imgName = saveName ".jpg";//图片文件名; string playName = saveName ".flv"; string sqlstr = "insert into Media(FMediaName,FMediaUpPath,FMediaPlayPath,FMediaImgPath) values(@MName,@MUppath,@MPlaypath,@MImgpath)"; //string constr = ConfigurationManager.ConnectionStrings["sqlcon"].ToString(); SqlDataSource1.InsertCommand = sqlstr; SqlDataSource1.InsertCommandType = SqlDataSourceCommandType.Text;// CommandType.Text; SqlDataSource1.InsertParameters.Add("MName",MediaName); SqlDataSource1.InsertParameters.Add("MUppath",PublicMethod.upFile fileName); SqlDataSource1.InsertParameters.Add("MPlaypath",PublicMethod.playFile playName); SqlDataSource1.InsertParameters.Add("MImgpath",PublicMethod.imgFile imgName); SqlDataSource1.Insert(); } #endregion #region //运行tool的视频解码， // <summary> /// @从视频文件截图,生成在视频文件所在文件夹 /// 在Web.Config 中需要两个前置配置项: /// 1.ffmpeg.exe文件的路径 /// <add key="ffmpeg" value="E:\51aspx\ffmpeg.exe" /> /// 2.截图的尺寸大小 /// <add key="CatchFlvImgSize" value="240x180" /> /// 3.视频处理程序ffmpeg.exe /// </summary> /// <param name="vFileName">视频文件地址,如:/Web/FlvFile/User1/00001.Flv</param> /// <returns>成功:返回图片虚拟地址; 失败:返回空字符串</returns> public string CatchImg(string vFileName,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 tool = PublicMethod.ffmpegtool; string tool = PublicMethod.mencodertool; tool = Server.MapPath(tool); if ((!System.IO.File.Exists(tool)) || (!System.IO.File.Exists(vFileName))) { 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(imgFile, ".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(tool); System.Diagnostics.ProcessStartInfo ImgstartInfo = new System.Diagnostics.ProcessStartInfo(tool); FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; ImgstartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; //此处组合成tool.exe文件需要的参数即可,此处命令在tool 0.4.9调试通过 //tool -i F:\01.wmv -ab 56 -ar 22050 -b 500 -r 15 -s 320x240 f:\test.flv // FilestartInfo.Arguments = " -i " vFileName " -ab 56 -ar 22050 -b 500 -r 15 -s 320x240 " flv_file; // ImgstartInfo.Arguments = " -i " vFileName " -y -f image2 -t 0.001 -s " FlvImgSize " " flv_img; 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=512:-3 -ofps 12 -srate 22050"; 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tool.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}