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• Create Video thumbnail in slim

  29 juillet 2015, par shivani gupta

  I am creating api’s using slim framework.My problem is that i am trying to upload video to localserver but the thumbnails of video are not generating.
  I have tried ffmpeg but it is not working :

  Here is my code :

  exec('ffmpeg -itsoffset -4 -i C:\xampp\htdocs\givemethatpic\shared_17008.mp4  -vcodec mjpeg -vframes 1 -an -f rawvideo -ss 620x440  C:\xampp\htdocs\givemethatpic\tdrrsss.jpg');

  I used ffmpeg-win32 setup and it installed the ffmpeg to C :\Program Files (x86).
  I do not know where i am wrong.Please tell why thumbnail is not generating ??

• ffmpeg generate thumbnail with aspect ratio, but X seconds into video

  24 septembre 2013, par skrilled

  So this command works for generating a thumbnail 5 seconds into the video, with a size of 300x300 :

  $cmd = '/usr/local/bin/ffmpeg -i '.$this->getUploadRootDir().'/'.$fname.' -ss 00:00:05 -f image2 -vframes 1 -s 300x300 '.$this->getUploadRootDir().'/thumb_'.$output;

  However, I want to keep the aspect ratio so I changed my code to this :

  $cmd = "/usr/local/bin/ffmpeg -i ".$this->getUploadRootDir()."/".$fname." -ss 00:00:5 -f image2 scale='min(300\, iw):-1' ".$this->getUploadRootDir()."/thumb_".$output;

  The above code correctly sizes the image, however it's of the first frame in the video.. I need the thumbnail to be 5 seconds in. Any help would be much appreciated.

• ffmpeg not creating a name for image after thumbnail generation C#

  15 août 2012, par Lynx

  I just learn how to use ASP.NET and learn C# last month and now I am having a problem.
  I am experimenting on how to generate thumbnail using ffmpeg in C#. The thumbnail successfully generated in intended folder but there is no name for the image file.
  what I want to do is to create thumbnail and automatically named the jpg file same as the video file.

  I can't figure out what is wrong with my code ; in fact, I don't even understand the code completely as I copied the code from internet and change the folder path of the files.

  private void generateThumbnails(string filename)
  
  {
  
      string[] setThum = filename.Split('.');
  
      string thumb_path = setThum[0] + ".jpg";
  
      filename = "C:\\ramky\\al.avi";
  
      string thumbpath, thumbname;//, videopath;
  
      string thumbargs, inputfile;
  
      thumbpath = "C:\\ramky\\";
  
      thumbname = thumbpath + thumb_path;
  
      inputfile = filename;
  
      thumbargs = "-i \"" + inputfile + "\" -s 240*150 -ss 1 -vframes 1 -f image2 \"" + thumbname + "\"";
  
  
  
      Process thumbproc = new Process();
  
      thumbproc = new Process();
  
  
  
      thumbproc.StartInfo.FileName = "C:\\ffmpeg\\ffmpeg.exe";
  
      thumbproc.StartInfo.Arguments = thumbargs;
  
      thumbproc.StartInfo.UseShellExecute = false;
  
      thumbproc.StartInfo.CreateNoWindow = true;
  
      thumbproc.StartInfo.RedirectStandardOutput = false;
  
  
  
      try
  
      {
  
          thumbproc.Start();
  
          if (thumbproc != null)
  
          {
  
              thumbproc.Close();
  
          }
  
      }
  
  }

  Your help will be really appreciated.