public MainWindow()
{
InitializeComponent();
DataObject.AddPastingHandler(OutputFilenameBox, OutputFilenameBox_Paste);
FFMpeg.Instance.FFMpegPath = Path.Combine(Environment.CurrentDirectory, "ffmpeg\\ffmpeg.exe");
FFMpeg.Instance.FFProbePath = Path.Combine(Environment.CurrentDirectory, "ffmpeg\\ffprobe.exe");
}