/// <summary>
        ///   Initializes a new instance of the <see cref="MainViewModel"/> class.
        /// </summary>
        ///
        public RecorderViewModel(MainViewModel main, VideoSourcePlayer2 player)
        {
            if (main == null)
            {
                throw new ArgumentNullException("main");
            }

            if (player == null)
            {
                throw new ArgumentNullException("player");
            }

            this.main                  = main;
            this.videoPlayer           = player;
            this.videoPlayer.NewFrame += Player_NewFrame;

            this.CaptureMode   = CaptureRegionOption.Primary;
            this.CaptureRegion = new Rectangle(0, 0, 640, 480);

            this.clickCapture  = new CaptureClick();
            this.cursorCapture = new CaptureCursor();
            this.keyCapture    = new CaptureKeyboard();

            this.AudioCaptureDevices = new AudioViewModelCollection(RecorderViewModel.AudioDevices);


            // Search and mark last selected devices
            foreach (var dev in AudioCaptureDevices)
            {
                dev.Checked = Settings.Default.LastAudioDevices
                              .Contains(dev.DeviceInfo.Guid.ToString());
            }
        }
        /// <summary>
        ///   Initializes a new instance of the <see cref="MainViewModel"/> class.
        /// </summary>
        ///
        public MainViewModel(VideoSourcePlayer2 player)
        {
            if (player == null)
            {
                throw new ArgumentNullException("player");
            }

            Recorder  = new RecorderViewModel(this, player);
            Notifier  = new NotifyViewModel(Recorder);
            Converter = new ConvertViewModel(this);

            IsPreviewVisible = true;
            CurrentDirectory = Settings.Default.DefaultFolder;
            StatusText       = Resources.Status_Ready;



            PropertyChanged           += MainViewModel_PropertyChanged;
            Recorder.PropertyChanged  += recorder_PropertyChanged;
            Converter.PropertyChanged += Convert_PropertyChanged;
        }