VP9 speed in config, sorted config keys, better config err handling

Code/AudioVideo/FFmpegUtils.cs

@@ -63,7 +63,8 @@ namespace Flowframes.AudioVideo
             {
                 int crf = Config.GetInt("vp9Crf");
                 string qualityStr = (crf > 0) ? $"-crf {crf}" : "-lossless 1";
-                args += $"{qualityStr} -cpu-used 3 -tile-columns 2 -tile-rows 2 -row-mt 1";
+                string cpuUsed = Config.GetInt("vp9Speed", 3).ToString();
+                args += $"{qualityStr} -cpu-used {cpuUsed} -tile-columns 2 -tile-rows 2 -row-mt 1";
             }
 
             if(codec == Codec.ProRes)

Code/IO/Config.cs

@@ -17,16 +17,23 @@ namespace Flowframes.IO
         public static void Init()
         {
             configPath = Path.Combine(Paths.GetDataPath(), "config.ini");
-            if (!File.Exists(configPath))
-            {
-                File.Create(configPath).Close();
-            }
+            IOUtils.CreateFileIfNotExists(configPath);
             Reload();
         }
 
         public static void Set(string key, string value)
         {
-            string[] lines = File.ReadAllLines(configPath);
+            string[] lines = new string[1];
+            try
+            {
+                lines = File.ReadAllLines(configPath);
+            }
+            catch
+            {
+                MessageBox.Show("Failed to read config file!\nFlowframes will try to re-create the file if it does not exist.", "Error");
+                if(!File.Exists(configPath))
+                    Init();
+            }
             for (int i = 0; i < lines.Length; i++)
             {
                 if (lines[i].Split('|')[0] == key)
@@ -39,6 +46,7 @@ namespace Flowframes.IO
             }
             List<string> list = lines.ToList();
             list.Add(key + "|" + value);
+            list = list.OrderBy(p => p).ToList();
             File.WriteAllLines(configPath, list.ToArray());
             cachedLines = list.ToArray();
         }

Code/IO/IOUtils.cs

@@ -617,5 +617,22 @@ namespace Flowframes.IO
 			DirectoryInfo dir = new DirectoryInfo(path);
 			return dir.GetFiles(pattern, opt).OrderBy(x => x.Name).ToArray();
 		}
+
+		public static bool CreateFileIfNotExists (string path)
+        {
+			if (File.Exists(path))
+				return false;
+
+            try
+            {
+				File.Create(path).Close();
+				return true;
+            }
+			catch (Exception e)
+            {
+				Logger.Log($"Failed to create file at '{path}': {e.Message}");
+				return false;
+            }
+        }
 	}
 }