changes for 3.7.0

* Display original FPS in interpolate box
* If value in interpolate box is 0, it will be removed
* Gfycat stats, see them in tab General
* Add option to log out of Gfycat
* Add feedback to merge files to avoid errors

MainForm.cs

@@ -128,6 +128,8 @@ public MainForm()
 
             if (!String.IsNullOrEmpty(configuration.AppSettings.Settings["RefreshToken"].Value))
                 GetToken(string.Empty, Token.Refresh);
+            else
+                groupGfycat.Visible = false;
 
             if (!configuration.AppSettings.Settings.AllKeys.Contains("VP9"))
                 configuration.AppSettings.Settings.Add("VP9", "false");
@@ -152,6 +154,11 @@ private void LoadConfiguration()
             else
                 boxAudio.Checked = false;
 
+            if (configuration.AppSettings.Settings["VP9"].Value.Equals("true"))
+                boxNGOV.Checked = true;
+            else
+                boxNGOV.Checked = false;
+
             if (!String.IsNullOrEmpty(configuration.AppSettings.Settings["PathDownload"].Value))
                 textPathDownloaded.Text = configuration.AppSettings.Settings["PathDownload"].Value;
 
@@ -261,6 +268,9 @@ private bool MergeVideoFile(string[] files)
             Array.Sort(files);
             foreach (string fileName in files)
             {
+                if (!CheckFileName(fileName))
+                    return true;
+
                 content += $"file '{fileName}'\n";
                 tempExtension = Path.GetExtension(fileName);
                 if (!extensions.ContainsKey(tempExtension))
@@ -285,6 +295,16 @@ private bool MergeVideoFile(string[] files)
             return true;
         }
 
+        private bool CheckFileName(string fileName)
+        {
+            if (fileName.Contains("'"))
+            {
+                MessageBox.Show($"Check the videos, the filename can't contain -> ' ","Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return false;
+            }
+            return true;           
+        }
+
         void MainForm_Shown(object sender, EventArgs e)
         {
             clearToolTip();
@@ -1286,7 +1306,6 @@ private void DefaultSettings()
 
             boxDeinterlace.Checked =
             boxDenoise.Checked =
-            boxNGOV.Checked =
                 false;
 
             numericCrf.Value = 30;
@@ -1700,6 +1719,7 @@ void SetFile(string path)
                 Program.VideoInterlaced = frame.InterlacedFrame;
                 SetCRF(frame.EncodedResolution);
                 SetSlices(frame.EncodedResolution);
+                SetFPS();
                 LoadFonts(msg => logIndexingProgress((string)msg));
             });
             indexbw.RunWorkerCompleted += delegate(object sender, RunWorkerCompletedEventArgs e)
@@ -1817,6 +1837,15 @@ void SetFile(string path)
             indexbw.RunWorkerAsync();
         }
 
+        private void SetFPS()
+        {
+            double originalFPS = Program.VideoSource.NumberOfFrames / Program.VideoSource.LastTime;
+            this.InvokeIfRequired(() =>
+            {
+                SendMessage(boxFrameRate.Handle, EM_SETCUEBANNER, 0, $"Original FPS {Math.Round(originalFPS, 1)}");
+            });            
+        }
+
         private void SetCRF(Size resolution)
         {
             if (resolution.Width > 2000)
@@ -2419,11 +2448,6 @@ private string GetTemporaryLogFile()
 
         #endregion
 
-        private async void button1_ClickAsync(object sender, EventArgs e)
-        {
-            BrowserAuthentication();
-        }
-
         public void BrowserAuthentication()
         {
             HttpListener http = new HttpListener();
@@ -2533,6 +2557,7 @@ public void GetToken(string code, Token action)
                 TokenResponse tokenResponse = JsonConvert.DeserializeObject<TokenResponse>(textJson);
                 Program.token = tokenResponse.access_token;
                 UpdateConfiguration("RefreshToken", tokenResponse.refresh_token);
+                _ = Task.Run(() => GetUserDetails());
             }
             catch (WebException ex)
             {
@@ -2559,6 +2584,35 @@ public void GetToken(string code, Token action)
             }            
         }
 
+        private void GetUserDetails()
+        {
+            try
+            {
+                WebRequest httpWRequest = WebRequest.Create("https://api.gfycat.com/v1/me");
+                httpWRequest.ContentType = "application/json";
+                httpWRequest.Method = "GET";
+                httpWRequest.Headers.Add("Authorization", "Bearer " + Program.token);
+                HttpWebResponse httpWResponse = (HttpWebResponse)httpWRequest.GetResponse();
+                Stream strm = httpWResponse.GetResponseStream();
+                StreamReader sr = new StreamReader(strm);
+                string textJson = sr.ReadToEnd();
+                UserDetailsResponse userDetail = JsonConvert.DeserializeObject<UserDetailsResponse>(textJson);
+                SetUserDetails(userDetail);
+            }
+            catch {}
+        }
+
+        private void SetUserDetails(UserDetailsResponse userDetail)
+        {
+            groupGfycat.Visible = true;
+            lblUser.Text = string.Format(lblUser.Text, userDetail.name);
+            lblPublicGfys.Text = string.Format(lblPublicGfys.Text, userDetail.publishedGfycats);
+            lblTotalGfys.Text = string.Format(lblTotalGfys.Text, userDetail.totalGfycats);
+            lblViews.Text = string.Format(lblViews.Text, string.Format("{0:#,0}", userDetail.views));
+            lblFollowers.Text = string.Format(lblFollowers.Text, userDetail.followers);
+            pictureBox.LoadAsync(userDetail.profileImageUrl);
+        }
+
         private void UpdateConfiguration(string key, string value)
         {            
             configuration.AppSettings.Settings[key].Value = value;
@@ -2608,6 +2662,19 @@ private void comboLevels_SelectedIndexChanged_1(object sender, EventArgs e)
         {
             UpdateArguments(sender, e);
         }
+
+        private void boxFrameRate_Leave(object sender, EventArgs e)
+        {
+            if (boxFrameRate.Text.Equals("0"))
+                boxFrameRate.Text = string.Empty;
+        }
+
+        private void buttonLogOut_Click(object sender, EventArgs e)
+        {
+            UpdateConfiguration("RefreshToken", string.Empty);
+            Program.token = string.Empty;
+            groupGfycat.Visible = false;
+        }
     }
 
     public enum EncodingMode