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• ffmpeg not working on Asp.net MVC

  9 avril 2015, par Faisal Mq

  I am using ffmpeg to extract thumbnails from video files and also to get their durations.
  The code works absolutely fine in Console Application, but when I use it on Asp.Net MVC 3, it does not work at all.

  I have placed ffmpeg.exe file on my application’s root folder and set its property "Copy to Output Directory" to "Copy Always"

  ffmpeg file gets placed in my application’s Bin folder after that I compile my project but it is not doing anything. It does not give me any error but also does not giving me my intended results, which are otherwise working absolutely fine in a Console application.

  [NOTE] In QuickWatch when I see the value for "output" on statement :

  string output = SROutput.ReadToEnd();

  ffmpeg shows me following output but this output does not include Duration info like it does in Console application.

  ffmpeg version N-69422-gf5722ba Copyright (c) 2000-2015 the FFmpeg developers
  
    built on Jan 30 2015 22:13:10 with gcc 4.9.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
  
    libavutil      54. 18.100 / 54. 18.100
  
    libavcodec     56. 21.101 / 56. 21.101
  
    libavformat    56. 19.100 / 56. 19.100
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5.  9.102 /  5.  9.102
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100

  I am pasting here the code that I am using just to get the duration of a media file using ffmpeg.

  private static TimeSpan GetVideoDurationByFFMPEG(string ffmpegPath, string filepath)
  
          {
  
              string param = string.Format("-i \"{0}\"", filepath);
  
  
  
              System.Text.RegularExpressions.Regex re = null;
  
              System.Text.RegularExpressions.Match m = null;
  
              TimeSpan Duration = new TimeSpan();
  
  
  
              //Get ready with ProcessStartInfo
  
              ProcessStartInfo oInfo = new ProcessStartInfo(ffmpegPath, param);
  
              oInfo.CreateNoWindow = true;
  
  
  
              //ffMPEG uses StandardError for its output.
  
              oInfo.RedirectStandardError = true;
  
              oInfo.WindowStyle = ProcessWindowStyle.Hidden;
  
              oInfo.UseShellExecute = false;
  
  
  
              // Lets start the process
  
  
  
              Process mProcess = Process.Start(oInfo);
  
  
  
              // Divert output
  
              StreamReader SROutput = mProcess.StandardError;
  
  
  
              // Read all
  
              string output = SROutput.ReadToEnd();
  
  
  
              //get duration
  
  
  
              re = new System.Text.RegularExpressions.Regex("[D|d]uration:.((\\d|:|\\.)*)");
  
              m = re.Match(output);
  
  
  
              if (m.Success)
  
              {
  
                  //Means the output has cantained the string "Duration"
  
                  string temp = m.Groups[1].Value;
  
                  string[] timepieces = temp.Split(new char[] { ':', '.' });
  
                  if (timepieces.Length == 4)
  
                  {
  
  
  
                      // Store duration
  
                      Duration = new TimeSpan(0, Convert.ToInt16(timepieces[0]), Convert.ToInt16(timepieces[1]), Convert.ToInt16(timepieces[2]), Convert.ToInt16(timepieces[3]));
  
                  }
  
              }
  
  
  
              mProcess.Close();
  
  
  
              return Duration;
  
          }

  Please someone guide me where I am getting wrong.

• ffmpeg command to merge two mp4 file is not working

  27 février 2018, par Arpit Pagaria

  Hi I am trying to merge two mp4 file using ffmpeg commad. I found below command from somewhere. I have copy this complete command and paste this in cmd. But got error "Error initiaNo such filter : ’\’.Error Initializing complex filters.Invalid argument". Please help me out how to run this command ?

  ffmpeg -i GYM_1.mp4 -i Snow_1.mp4 -filter_complex "\
  
  [0:v]setsar=1[0v]; \
  
  [1:v]scale=720:576:force_original_aspect_ratio=decrease,setsar=1,\
  
       pad=720:576:(ow-iw)/2:(oh-ih)/2[1v]; \
  
  [0v][0:a][1v][1:a]concat=n=2:v=1:a=1[outv][outa] \
  
  " -map "[outv]" -map "[outa]" \
  
  -c:v libx264 -crf 23 \
  
  ffmpeg1.mp4

• Using Sony camera (a6500) as a webcam in Ubuntu 20.04 - Working fine

  22 juillet 2022, par The Flying Maverick

  Is possible to use your Sony camera as webcam in ubuntu ?, In my case I have tried with the following steps and everything is running fine.