Print vid res on load, set preview to 1st frame on load, updated Readme with basic info

Code/UI/MainUiFunctions.cs

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+using Flowframes.IO;
+using Flowframes.Magick;
+using Flowframes.Main;
+using Flowframes.OS;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Flowframes.UI
+{
+    class MainUiFunctions
+    {
+        public static async Task InitInput (TextBox outputTbox, TextBox inputTbox, TextBox fpsInTbox)
+        {
+            outputTbox.Text = inputTbox.Text.Trim().GetParentDir();
+            string path = inputTbox.Text.Trim();
+            Program.lastInputPath = path;
+            string fpsStr = "Not Found";
+            float fps = IOUtils.GetFpsFolderOrVideo(path);
+            if (fps > 0)
+            {
+                fpsStr = fps.ToString();
+                fpsInTbox.Text = fpsStr;
+            }
+            Interpolate.SetFps(fps);
+            Program.lastInputPathIsSsd = OSUtils.DriveIsSSD(path);
+            if (!Program.lastInputPathIsSsd)
+                Logger.Log("Your file seems to be on an HDD or USB device. It is recommended to interpolate videos on an SSD drive for best performance.");
+            if (IOUtils.IsPathDirectory(path))
+                Logger.Log($"Video FPS (Loaded from fps.ini): {fpsStr} - Total Number Of Frames: {IOUtils.GetAmountOfFiles(path, false)}");
+            else
+                Logger.Log($"Video FPS: {fpsStr} - Total Number Of Frames: {FFmpegCommands.GetFrameCount(path)}");
+            await Task.Delay(10);
+            Size res = FFmpegCommands.GetSize(path);
+            Logger.Log($"Video Resolution: {res.Width}x{res.Height}");
+            MagickDedupe.ClearCache();
+            await Task.Delay(10);
+            InterpolateUtils.SetPreviewImg(await GetThumbnail(path));
+        }
+
+        static async Task<Image> GetThumbnail (string videoPath)
+        {
+            string imgOnDisk = Path.Combine(Paths.GetDataPath(), "thumb-temp.png");
+            try
+            {
+                await FFmpegCommands.ExtractSingleFrame(videoPath, imgOnDisk, 1, false, false);
+                return IOUtils.GetImage(imgOnDisk);
+            }
+            catch (Exception e)
+            {
+                Logger.Log("GetThumbnail Error: " + e.Message, true);
+                return null;
+            }
+        }
+    }
+}