diff --git a/src/Forms/Main.cs b/src/Forms/Main.cs
index 2a09dba37..797959504 100644
--- a/src/Forms/Main.cs
+++ b/src/Forms/Main.cs
@@ -2593,7 +2593,28 @@ namespace Nikse.SubtitleEdit.Forms
                         MessageBox.Show(_language.FileIsEmptyOrShort);
                     }
                     else
+                    {
+                       string[] arr = File.ReadAllLines(fileName, Utilities.GetEncodingFromFile(fileName));
+                       var sb = new StringBuilder();
+                       foreach (string l in arr)
+                            sb.AppendLine(l);                        
+                        string xmlAsString = sb.ToString().Trim();
+                        if (xmlAsString.Contains("http://www.w3.org/ns/ttml") && xmlAsString.Contains("<?xml version="))
+                        {
+                            var xml = new System.Xml.XmlDocument();
+                            try
+                            {
+                                xml.LoadXml(xmlAsString);
+                            }
+                            catch (Exception ex)
+                            {
+                                MessageBox.Show("Timed text is not valid: " + ex.Message);
+                                return;
+                            }
+                        }
                         ShowUnknownSubtitle();
+                        return;
+                    }
                 }
 
                 if (!videoFileLoaded && mediaPlayer.VideoPlayer != null)
diff --git a/src/Forms/UnknownSubtitle.Designer.cs b/src/Forms/UnknownSubtitle.Designer.cs
index 14a0b667d..790af38ad 100644
--- a/src/Forms/UnknownSubtitle.Designer.cs
+++ b/src/Forms/UnknownSubtitle.Designer.cs
@@ -38,17 +38,18 @@
             this.labelTitle.AutoSize = true;
             this.labelTitle.Location = new System.Drawing.Point(15, 25);
             this.labelTitle.Name = "labelTitle";
-            this.labelTitle.Size = new System.Drawing.Size(114, 13);
+            this.labelTitle.Size = new System.Drawing.Size(145, 17);
             this.labelTitle.TabIndex = 0;
             this.labelTitle.Text = "Unknown subtitle type";
             // 
             // buttonOK
             // 
+            this.buttonOK.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
             this.buttonOK.DialogResult = System.Windows.Forms.DialogResult.OK;
             this.buttonOK.ImeMode = System.Windows.Forms.ImeMode.NoControl;
-            this.buttonOK.Location = new System.Drawing.Point(262, 115);
+            this.buttonOK.Location = new System.Drawing.Point(324, 134);
             this.buttonOK.Name = "buttonOK";
-            this.buttonOK.Size = new System.Drawing.Size(75, 21);
+            this.buttonOK.Size = new System.Drawing.Size(100, 27);
             this.buttonOK.TabIndex = 8;
             this.buttonOK.Text = "&OK";
             this.buttonOK.UseVisualStyleBackColor = true;
@@ -62,7 +63,7 @@
             this.richTextBoxMessage.Name = "richTextBoxMessage";
             this.richTextBoxMessage.ReadOnly = true;
             this.richTextBoxMessage.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.Vertical;
-            this.richTextBoxMessage.Size = new System.Drawing.Size(319, 47);
+            this.richTextBoxMessage.Size = new System.Drawing.Size(406, 47);
             this.richTextBoxMessage.TabIndex = 41;
             this.richTextBoxMessage.TabStop = false;
             this.richTextBoxMessage.Text = "If you want this fixed please send an email to mailto:niksedk@gmail.com and inclu" +
@@ -70,9 +71,9 @@
             // 
             // UnknownSubtitle
             // 
-            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 17F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(349, 148);
+            this.ClientSize = new System.Drawing.Size(436, 173);
             this.Controls.Add(this.richTextBoxMessage);
             this.Controls.Add(this.buttonOK);
             this.Controls.Add(this.labelTitle);
diff --git a/src/Logic/SubtitleFormats/SubtitleFormat.cs b/src/Logic/SubtitleFormats/SubtitleFormat.cs
index 61c9afd09..bdda636ee 100644
--- a/src/Logic/SubtitleFormats/SubtitleFormat.cs
+++ b/src/Logic/SubtitleFormats/SubtitleFormat.cs
@@ -187,6 +187,7 @@ namespace Nikse.SubtitleEdit.Logic.SubtitleFormats
                     new UnknownSubtitle60(),
                     new UnknownSubtitle61(),
                     new UnknownSubtitle62(),
+                    new UnknownSubtitle63(),
                 };
 
                 string path = Configuration.PluginsDirectory;
diff --git a/src/Logic/SubtitleFormats/UnknownSubtitle63.cs b/src/Logic/SubtitleFormats/UnknownSubtitle63.cs
new file mode 100644
index 000000000..6afec5f70
--- /dev/null
+++ b/src/Logic/SubtitleFormats/UnknownSubtitle63.cs
@@ -0,0 +1,140 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace Nikse.SubtitleEdit.Logic.SubtitleFormats
+{
+    public class UnknownSubtitle63 : SubtitleFormat
+    {
+
+        //3:       00:00:09:23 00:00:16:21 06:23
+        //Alustame sellest...
+        //Siin kajab kuidagi harjumatult.
+        static Regex regexTimeCodes = new Regex(@"^\d+:\s+\d\d:\d\d:\d\d\:\d\d \d\d:\d\d:\d\d\:\d\d \d\d:\d\d$", RegexOptions.Compiled);
+
+        public override string Extension
+        {
+            get { return ".txt"; }
+        }
+
+        public override string Name
+        {
+            get { return "Unknown 63"; }
+        }
+
+        public override bool IsTimeBased
+        {
+            get { return true; }
+        }
+
+        public override bool IsMine(List<string> lines, string fileName)
+        {
+            var subtitle = new Subtitle();
+
+            var sb = new StringBuilder();
+            foreach (string line in lines)
+                sb.AppendLine(line);
+
+            LoadSubtitle(subtitle, lines, fileName);
+            return subtitle.Paragraphs.Count > _errorCount;
+        }
+
+        public override string ToText(Subtitle subtitle, string title)
+        {
+            string format = "{0}:       {1} {2} {3:00}:{4:00}";
+            var sb = new StringBuilder();
+            int count = 1;
+            foreach (Paragraph p in subtitle.Paragraphs)
+            {
+                sb.AppendLine(string.Format(format, count, EncodeTimeCode(p.StartTime), EncodeTimeCode(p.EndTime), p.Duration.Seconds, MillisecondsToFramesMaxFrameRate(p.Duration.Milliseconds)));
+                sb.AppendLine(p.Text);
+                sb.AppendLine();
+                count++;
+            }
+            return sb.ToString().Trim();
+        }
+
+        private string EncodeTimeCode(TimeCode time)
+        {
+            return string.Format("{0:00}:{1:00}:{2:00}:{3:00}", time.Hours, time.Minutes, time.Seconds, MillisecondsToFramesMaxFrameRate(time.Milliseconds));
+        }
+
+        public override void LoadSubtitle(Subtitle subtitle, List<string> lines, string fileName)
+        {
+            _errorCount = 0;
+            bool expectStartTime = true;
+            var p = new Paragraph();
+            subtitle.Paragraphs.Clear();
+            foreach (string line in lines)
+            {
+                string s = line.Trim().Replace("*", string.Empty);
+                var match = regexTimeCodes.Match(s);
+                if (match.Success)
+                {
+                    string[] parts = s.Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
+                    if (parts.Length == 4)
+                    {
+                        try
+                        {
+                            if (!string.IsNullOrEmpty(p.Text))
+                            {
+                                subtitle.Paragraphs.Add(p);
+                                p = new Paragraph();
+                            }
+                            p.StartTime = DecodeTimeCode(parts[1]);
+                            p.EndTime = DecodeTimeCode(parts[2]);
+                            expectStartTime = false;
+                        }
+                        catch (Exception exception)
+                        {
+                            _errorCount++;
+                            System.Diagnostics.Debug.WriteLine(exception.Message);
+                        }
+                    }
+                }
+                else if (line.Trim().Length == 0)
+                {
+                    if (p != null)
+                    {
+                        if (p.StartTime.TotalMilliseconds == 0 && p.EndTime.TotalMilliseconds == 0)
+                            _errorCount++;
+                        else
+                            subtitle.Paragraphs.Add(p);
+                        p = new Paragraph();
+                    }
+                }
+                else if (line.Trim().Length > 0 && !expectStartTime)
+                {
+                    p.Text = (p.Text + Environment.NewLine + line).Trim();
+                    if (p.Text.Length > 500)
+                    {
+                        _errorCount+=10;
+                        return;
+                    }
+                    while (p.Text.Contains(Environment.NewLine + " "))
+                        p.Text = p.Text.Replace(Environment.NewLine + " ", Environment.NewLine);
+                }
+            }
+            if (!string.IsNullOrEmpty(p.Text))
+                subtitle.Paragraphs.Add(p);
+
+            subtitle.RemoveEmptyLines();
+            subtitle.Renumber(1);
+        }
+
+        private TimeCode DecodeTimeCode(string part)
+        {
+            string[] parts = part.Split(":".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
+
+            string hour = parts[0];
+            string minutes = parts[1];
+            string seconds = parts[2];
+            string frames = parts[3];
+
+            return new TimeCode(int.Parse(hour), int.Parse(minutes), int.Parse(seconds), FramesToMillisecondsMax999(int.Parse(frames)));
+        }
+
+    }
+}
+
diff --git a/src/Logic/VideoPlayers/LibVlcDynamic.cs b/src/Logic/VideoPlayers/LibVlcDynamic.cs
index 67c39226c..c6a5a893c 100644
--- a/src/Logic/VideoPlayers/LibVlcDynamic.cs
+++ b/src/Logic/VideoPlayers/LibVlcDynamic.cs
@@ -590,8 +590,10 @@ namespace Nikse.SubtitleEdit.Logic.VideoPlayers
                 _libVlcDLL = LoadLibrary(dllFile);
                 LoadLibVlcDynamic();
             }
-            else
+            else if (!Directory.Exists(videoFileName))
+            {
                 return;
+            }
 
             OnVideoLoaded = onVideoLoaded;
             OnVideoEnded = onVideoEnded;
diff --git a/src/SubtitleEdit.csproj b/src/SubtitleEdit.csproj
index d4d590b99..93eb20c37 100644
--- a/src/SubtitleEdit.csproj
+++ b/src/SubtitleEdit.csproj
@@ -815,6 +815,7 @@
     <Compile Include="Logic\SubtitleFormats\CaraokeXml.cs" />
     <Compile Include="Logic\SubtitleFormats\Cavena890.cs" />
     <Compile Include="Logic\SubtitleFormats\CheetahCaption.cs" />
+    <Compile Include="Logic\SubtitleFormats\UnknownSubtitle63.cs" />
     <Compile Include="Logic\SubtitleFormats\UnknownSubtitle62.cs" />
     <Compile Include="Logic\SubtitleFormats\UnknownSubtitle61.cs" />
     <Compile Include="Logic\SubtitleFormats\UnknownSubtitle60.cs" />