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• How to get success info from ffmpeg on C# ?

  13 mars 2014, par user2989391

  I using ffmpeg on C#, my argument worked fine but i don't know get success handle..
  Sorry for my bad English.
  Thank you for help.

      ProcessStartInfo psi = new ProcessStartInfo("bin\\ffmpeg.exe");
  
      Process proc = Process.Start(psi);
  
      psi.UseShellExecute = false;
  
      psi.CreateNoWindow = true;
  
      psi.Arguments = " My argument ";
  
      psi.RedirectStandardError = true;
  
      psi.WindowStyle = ProcessWindowStyle.Hidden;
  
      proc = Process.Start(psi);
  
      StringBuilder sb = new StringBuilder();
  
      StreamReader outputReader = proc.StandardOutput;
  
      while (!(proc.StandardOutput.EndOfStream)) {
  
          sb.AppendLine(proc.StandardOutput.ReadLine());
  
      }
  
      proc.WaitForExit();
  
      proc.Close();
  
      psi = null;

• formula to calculate video dimensions for target aspect ratio

  23 avril 2015, par Nevoxx

  i currently building an application that converts videos to a specific dimension under consideration of the target aspect ration.

  the target resolution must always be 1280x720, i want to fit the uploaded video in this size using black bars.

  can anyone point out a formula to calculate the target video dimensions without changing it’s aspect ratio ? if the target with is smaller then 1280x720 i’ll add the missing pixels as black bars.

  i’m using ffmpeg with the "-vf scale=1280x720,pad=?:?:black" command

  (sorry if my english is not that great)

• Only trim video without encoding laravel ffmpeg

  1er mai 2021, par gyd128

  I would like to ask if the possibility of using ffmpeg laravel in such a way that when cutting a movie it does not convert it to mp4 a second time ? I'm sending the code as it looks at the moment. There is an option on github to use CopyFormat, use ProtoneMedia \ LaravelFFMpeg \ FFMpeg \ CopyFormat; unfortunately it doesn't work on my example. Maybe someone will be that good and guide me to the answer. Sorry for my English

  


    $ffmpeg = \FFMpeg\FFMpeg::create();
        $video = $ffmpeg->open('../../filmy/'.$path);
        $video->filters()->clip(\FFMpeg\Coordinate\TimeCode::fromSeconds($start), \FFMpeg\Coordinate\TimeCode::fromSeconds($end));
        $video->save(new \FFMpeg\Format\Video\X264('libmp3lame'), '../../filmy/conversion/s.mp4');