From 31e92dcfbc2191611849ca7a5853ae3f8db3ff14 Mon Sep 17 00:00:00 2001
From: Nikolaj Olsson <nikse.dk@gmail.com>
Date: Wed, 8 May 2024 20:38:26 +0200
Subject: [PATCH] Work on #8312

---
 src/ui/Forms/Main.cs                      | 10 +++++-
 src/ui/Forms/TimedTextPropertiesImsc11.cs | 41 ++++++++++++++++++++---
 2 files changed, 46 insertions(+), 5 deletions(-)

diff --git a/src/ui/Forms/Main.cs b/src/ui/Forms/Main.cs
index 630c88c3c..5a3ec190f 100644
--- a/src/ui/Forms/Main.cs
+++ b/src/ui/Forms/Main.cs
@@ -32614,9 +32614,17 @@ namespace Nikse.SubtitleEdit.Forms
 
             if (ft == typeof(TimedTextImsc11))
             {
-                using (var properties = new TimedTextPropertiesImsc11(_subtitle))
+                var oldFr = Configuration.Settings.General.CurrentFrameRate;
+                using (var properties = new TimedTextPropertiesImsc11(_subtitle, _videoFileName))
                 {
                     properties.ShowDialog(this);
+
+                    if (oldFr != Configuration.Settings.General.CurrentFrameRate)
+                    {
+                        toolStripComboBoxFrameRate.Text = Configuration.Settings.General.DefaultFrameRate.ToString();
+                        SubtitleListview1.Fill(_subtitle, _subtitleOriginal);
+                        RefreshSelectedParagraph();
+                    }
                 }
 
                 return;
diff --git a/src/ui/Forms/TimedTextPropertiesImsc11.cs b/src/ui/Forms/TimedTextPropertiesImsc11.cs
index ef4898ed9..cab9edbf5 100644
--- a/src/ui/Forms/TimedTextPropertiesImsc11.cs
+++ b/src/ui/Forms/TimedTextPropertiesImsc11.cs
@@ -2,6 +2,7 @@
 using Nikse.SubtitleEdit.Core.SubtitleFormats;
 using Nikse.SubtitleEdit.Logic;
 using System;
+using System.Globalization;
 using System.Windows.Forms;
 using System.Xml;
 
@@ -10,10 +11,11 @@ namespace Nikse.SubtitleEdit.Forms
     public sealed partial class TimedTextPropertiesImsc11 : PositionAndSizeForm
     {
         private readonly Subtitle _subtitle;
+        private readonly string _videoFileName;
         private readonly XmlDocument _xml;
         private readonly XmlNamespaceManager _namespaceManager;
 
-        public TimedTextPropertiesImsc11(Subtitle subtitle)
+        public TimedTextPropertiesImsc11(Subtitle subtitle, string videoFileName)
         {
             UiUtil.PreInitialize(this);
             InitializeComponent();
@@ -23,6 +25,7 @@ namespace Nikse.SubtitleEdit.Forms
             Text = string.Format(LanguageSettings.Current.Main.Menu.File.FormatXProperties, new TimedTextImsc11().Name);
 
             _subtitle = subtitle;
+            _videoFileName = videoFileName;
             var notAvailable = "[" + LanguageSettings.Current.General.NotAvailable + "]";
             comboBoxDropMode.Items[0] = notAvailable;
             comboBoxTimeBase.Items[0] = notAvailable;
@@ -126,9 +129,9 @@ namespace Nikse.SubtitleEdit.Forms
                 }
             }
 
-            comboBoxFrameRate.Enabled = false;
-            comboBoxFrameRateMultiplier.Enabled = false;
-            comboBoxDropMode.Enabled = false;
+            comboBoxFrameRate.Enabled = string.IsNullOrEmpty(_videoFileName);
+            comboBoxFrameRateMultiplier.Enabled = string.IsNullOrEmpty(_videoFileName);
+            comboBoxDropMode.Enabled = string.IsNullOrEmpty(_videoFileName);
         }
 
         private void buttonCancel_Click(object sender, EventArgs e)
@@ -138,6 +141,36 @@ namespace Nikse.SubtitleEdit.Forms
 
         private void buttonOK_Click(object sender, EventArgs e)
         {
+            if (string.IsNullOrEmpty(_videoFileName))
+            {
+                if (float.TryParse(comboBoxFrameRate.Text.Replace(",", "."), NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var fr))
+                {
+                    if (comboBoxFrameRateMultiplier.Text == "1 1" || string.IsNullOrEmpty(comboBoxFrameRateMultiplier.Text))
+                    {
+                        Configuration.Settings.General.CurrentFrameRate = fr;
+                    }
+                    else
+                    {
+                        if (Math.Abs(fr - 24) < 0.001)
+                        {
+                            Configuration.Settings.General.CurrentFrameRate = 23.976;
+                        }
+                        else if (Math.Abs(fr - 30) < 0.001)
+                        {
+                            Configuration.Settings.General.CurrentFrameRate = 29.97;
+                        }
+                        else if (Math.Abs(fr - 60) < 0.001)
+                        {
+                            Configuration.Settings.General.CurrentFrameRate = 59.94;
+                        }
+                        else
+                        {
+                            Configuration.Settings.General.CurrentFrameRate = fr;
+                        }
+                    }
+                }
+            }
+
             XmlNode node = _xml.DocumentElement.SelectSingleNode("ttml:head/ttml:metadata/ttml:title", _namespaceManager);
             if (node != null)
             {