Basic pieces seem to be in place

Got the controls working in the way that I wanted them.

butterflow-ui/OptionsConfiguration.cs

@@ -0,0 +1,107 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using csmic;
+
+namespace butterflow_ui
+{
+
+    /// <summary> (Serializable) the options configuration. </summary>
+    [Serializable]
+    public class OptionsConfiguration : INotifyPropertyChanged
+    {
+        #region Members
+
+        /// <summary> Occurs when a property value changes. </summary>
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        private InputInterpreter interpreter = new InputInterpreter();
+
+        private string playbackRate;
+        private bool keepAudio;
+        private int width;
+        private int height;
+
+        #endregion
+
+        #region Properties
+
+        /// <summary> Gets or sets the playback rate. </summary>
+        /// <value> The playback rate. </value>
+        public string PlaybackRate
+        {
+            get
+            {
+                return this.playbackRate;
+            }
+            set
+            {
+                this.playbackRate = value;
+                OnPropertyChanged("PlaybackRate");
+            }
+        }
+
+        /// <summary> Gets or sets a value indicating whether the keep audio. </summary>
+        /// <value> True if keep audio, false if not. </value>
+        public bool KeepAudio
+        {
+            get
+            {
+                return this.keepAudio;
+            }
+            set
+            {
+                this.keepAudio = value;
+                OnPropertyChanged("KeepAudio");
+            }
+        }
+
+        /// <summary> Gets or sets the width. </summary>
+        /// <value> The width. </value>
+        public string Width
+        {
+            get
+            {
+                return this.width.ToString();
+            }
+            set
+            {
+                interpreter.Interpret(value);
+                this.width = interpreter.Int;
+                OnPropertyChanged("Width");
+            }
+        }
+
+        /// <summary> Gets or sets the height. </summary>
+        /// <value> The height. </value>
+        public string Height
+        {
+            get
+            {
+                return this.height.ToString();
+            }
+            set
+            {
+                interpreter.Interpret(value);
+                this.height = interpreter.Int;
+                OnPropertyChanged("Height");
+            }
+        }
+
+        #endregion
+
+        #region Methods
+
+        /// <summary> Executes the property changed action. </summary>
+        /// <param name="name"> The name. </param>
+        protected void OnPropertyChanged(string name)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+        }
+
+        #endregion
+    }
+}