Use FFMPEG in Asp.net (the uploaded video is converted to the FLV format and an image is taken)

Protected   Void Button#click ( Object Sender, eventargs E)
{
 String Ffmpegarguments = @"  -I d: \ Li Ge. wmv-AB 56-ar 22050-B 500-R 15-s 320x240 D: \ Li Ge. FLV  " ;
 //  Processstartinfo info = new processstartinfo ("D:/FFMPEG", ffmpegarguments );
  //  Process. Start (Info ); 
 
PROCESS p = New Process (); //  The process class has a startinfo atomicity. This is processstartinfo class, which includes some attention and Methods. Below we use its attention:  
 P. startinfo. filename = "  D:/FFMPEG/ffmpeg.exe  " ; //  SetProgramName  
 P. startinfo. Arguments = ffmpegarguments; // Set the number of dynamic rows in the program  
 P. startinfo. useshellexecute = False ; //  Use of Shell  
 P. startinfo. redirectstandardinput = True ; //  Redirect to ingress  
 P. startinfo. redirectstandardoutput = True ; //  Redirect to outbound 
 P. startinfo. redirectstandarderror = True ; //  Redirect zookeeper outbound  
 P. startinfo. createnowindow = True ; //  Display window for setting no parameters  
 P. Start (); //  Operation
  //  P. standardinput. writeline (ffmpegarguments ); //  You can also use this method to export the command to be executed.
  //  P. standardinput. writeline ("exit ");  //  But remember to add exit, or else the next line of program will become available when the program crashes.  
 }

 /**/  ///  Convert video (AVI, mov, etc.) to FLV format
  ///   </Summary>  
  ///  <Param name = "fromname">  Converted video file  </Param>  
  ///   <Param name = "exportname">  Name of the converted FLV File  </Param>  
  ///   <Param name = "exportname">  Video size  </Param>  
  ///  <Returns> </returns>  
      Public   String Videoconvertflv ( String Fromname, String Exportname, String Widthandheight)
{
 String FFmpeg = @"  D: \ FFMPEG \ ffmpeg.exe  " ;
System. Diagnostics. processstartinfo startinfo =New System. Diagnostics. processstartinfo (FFMPEG );
Startinfo. windowstyle = system. Diagnostics. processwindowstyle. hidden;
 //  Startinfo. arguments = "-I" + server. mappath (fromname) + "-AB 56-ar 22050-B 500-R 15-s" + widthandheight + "" + server. mappath (exportname );  
 Startinfo. Arguments = "  -I  " + Fromname + "  -AB 56-ar 22050-B 500-R 15-S  " + Widthandheight +"   " + Exportname;
 Try  
{
System. Diagnostics. process. Start (startinfo );
 Return Exportname;
}
 Catch (Exception ERR)
{
 Return Err. message;
}
}

 /**/  ///  <Summary>  
  ///  Capture a frame from the video screen as an image
  ///   </Summary>  
  ///   <Param name = "videoname">  Video file PIC/Guiyu. mov  </Param>  
  ///   <Param name = "widthandheight">  The image size is 240*180. </Param>  
  ///   <Param name = "cuttimeframe">  The start time of the screenshot, for example, "1"  </Param>  
  ///   <Returns> </returns>  
      Public   String Getpicfromvideo ( String Videoname, String Widthandheight,String Cuttimeframe)
{

 String FFmpeg = @"  C: inetpubwwwrootdemopic fmpeg.exe  " ;
 String Picname = server. mappath (guid. newguid (). tostring (). Replace ( "  -  " , "" ) + "  . Jpg  " );
System. Diagnostics. processstartinfo startinfo = New System. Diagnostics. processstartinfo (FFMPEG );
Startinfo. windowstyle = system. Diagnostics. processwindowstyle. hidden;
Startinfo. Arguments = "  -I  " + Server. mappath (videoname) + "  -Y-F image2-SS  " + Cuttimeframe + "  -T 0.001-S  " + Widthandheight + "   " + Picname;
 Try  
{
System. Diagnostics. process. Start (startinfo );
 Return Picname;
}
 Catch (Exception ERR)
{
 Return Err. message;
}
}