private void buttonRender_Click(object sender, RoutedEventArgs e)
{
string fullName = Player.VlcMediaPlayer.Media.Mrl.Substring(8);
string directoryName = System.IO.Path.GetDirectoryName(fullName);
string fileName = System.IO.Path.GetFileName(fullName);
string fileNameWithoutExtension = System.IO.Path.GetFileNameWithoutExtension(fullName);
string extension = System.IO.Path.GetExtension(fullName);
string command = $"-i \"{fullName}\" -ss {markStart.ToString()} -to {markEnd.ToString()} -vcodec libx264 -acodec copy -crf 18 \"{System.IO.Path.Combine(directoryName, "CLIP_" + fileName)}\"";
dialogProcessing.IsOpen = true;
Process p = new Process();
p.StartInfo.FileName = Environment.CurrentDirectory + "\\ffmpeg.exe";
p.StartInfo.Arguments = command;
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.CreateNoWindow = true;
p.ErrorDataReceived += new DataReceivedEventHandler(Output);
p.Start();
p.BeginErrorReadLine();
p.EnableRaisingEvents = true;
p.Exited += new EventHandler(CmdProcess_Exited);
//Clipboard.SetText(command);
}