c# - .net application returns a connection reset when converting non-wav or non-mp3 files using FFmpeg -


i making .net application allows user upload audio file , convert mp3. using ffmpeg. works .wav , .mp3, application returns "connection reset" (i use firefox 4 testing) when try upload formats .wma or .m4a. naturally, when testing errors uploading unsupported files .jpg returned same thing. command line argument worked intended when did using cmd.

here code:

using system; using system.collections.generic; using system.linq; using system.web; using system.web.ui; using system.web.ui.webcontrols; using system.web.ui.webcontrols.webparts; using system.web.ui.htmlcontrols; using system.diagnostics; using system.media; using system.componentmodel; using system.componentmodel.design; using system.text.regularexpressions;  namespace audioconvert {     public partial class _default : system.web.ui.page     {         process ffmpeg;         protected void page_load(object sender, eventargs e)         {          }          protected void btnupload_click(object sender, eventargs e)         {             string audio;             string mp3;              if (fileupload1.hasfile)             {                 fileupload1.saveas(@"\temp\"+fileupload1.filename);             }              //fileupload1.saveas(server.mappath("") + system.io.path.getfilename(fileupload1.filename));             audio = @"\temp\"+fileupload1.filename; //audio filepath             mp3 = page.mappath("") + "\\media\\"+fileupload1.filename+".mp3";             ffmpeg = new process();              try             {                  ffmpeg.startinfo.arguments = "-y -i \"" + audio + "\" -ab 128k \"" + mp3; //-command line argument, overwrites automatically                 ffmpeg.startinfo.filename = page.mappath("ffmpeg.exe"); //ffmpeg file location                 ffmpeg.start();                 ffmpeg.waitforexit();                 ffmpeg.close();             }             catch             {             }         }     } }


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