using System.Diagnostics;

string ffmpegPath = Configure.ffmpegPath();              //ffmpeg.exe文件所在位置
string mencoderPath = Configure.mencoderPath();    //mencoder.exe文件所在位置

string orginalFile = strBaseLocation + @"old/" + fileName;   //轉(zhuǎn)換前文件所在全路徑
string targetFile = strBaseLocation + itemID + ".flv";           //轉(zhuǎn)換后文件所在全路徑

string argu = "";
if(fileName.ToUpper().EndsWith(".FLV"))  //不同文件類型使用不同轉(zhuǎn)換參數(shù)

                argu = "-i /"" + orginalFile + "/" -ab 56 -ar 22050 -b 500 -r 15 -s 500x350 /"" + targetFile + "/"";

else if (fileName.ToUpper().EndsWith(".WMV"))

                argu = @"-ffourcc FLV1 -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames -of lavf -oac mp3lame -lameopts aq=9:cbr:br=64:vol=2 -ovc lavc -lavcopts vcodec=flv:vbitrate=300:acodec=mp3:abitrate=56 -vf scale=320:290,expand=320:290:::1,crop=320:290:0:0 -ofps 18 -srate 22050 " + orginalFile + " -o " + targetFile;

else if (fileName.ToUpper().EndsWith(".AVI"))

                argu = "-i " + orginalFile + " -f flv -vcodec flv -ab 56 -ar 22050 -b 100 -r 15 -s 500x350 -qscale 7 " + targetFile;

//根據(jù)不同類型的文件進(jìn)行不同的轉(zhuǎn)換

if (!fileName.ToUpper().EndsWith(".FLV"))

{
        if (fileName.ToUpper().EndsWith(".WMV"))    //利用mencoder.exe將wmv文件轉(zhuǎn)換成flv文件
        {                       
                        System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo(mencoderPath, argu);
                        startInfo.WindowStyle = ProcessWindowStyle.Hidden;

                        System.Diagnostics.Process.Start(startInfo);
        }

        if (fileName.ToUpper().EndsWith(".AVI"))     //利用ffmpeg.exe將avi文件轉(zhuǎn)換成flv文件
        {
                        System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo(ffmpegPath, argu);
                        startInfo.WindowStyle = ProcessWindowStyle.Hidden;

                        System.Diagnostics.Process.Start(startInfo);    //隱藏dos轉(zhuǎn)換頁面
       }
}

else
{
         System.IO.File.Copy(orginalFile, targetFile);
}

if (System.IO.File.Exists(targetFile) && (new System.IO.FileInfo(targetFile)).Length > 10000)
{
       return "成功";

}
else

{

      return "失敗";

}