Fix crash in split - thx Leon :)

Fix #9110

Author: niksedk

Changelog.txt

@@ -39,6 +39,7 @@
    * Ctrl+A not working in subtitle duration field - thx rRobis
    * Allow reading Matroska files with ".mp4" extension
    * Up max byte size for auto-translate server calls to 128K - thx despairTK
+   * Make auto-translate setting resizable + a little larger - thx gjaskula
 * FIXED:
    * Fix for nulling time code after load of sub from mkv
    * Fix crash in TTS re-generate - thx cvrle77
@@ -57,6 +58,8 @@
    * Fix wrong timestamp (rounding) for format "CSV" - thx MariaB99
    * Fix LRC with milliseconds issue - thx AverageHoarder
    * Fix crash trying to get subtitles from mp4 - thx nounours18200 
+   * Fix crash in split - thx Leon
+   * Fix for ffprobe and HDR10 - thx warrentc3 
 
 
 4.0.8 (6th September 2024) 

src/ui/Forms/Main.cs

@@ -12181,8 +12181,9 @@ private void SplitSelectedParagraph(double? splitSeconds, int? textIndex, bool a
                 var lines = currentParagraph.Text.SplitToLines();
                 if (textIndex != null)
                 {
-                    string a = oldText.Substring(0, textIndex.Value).Trim();
-                    string b = oldText.Substring(textIndex.Value).Trim();
+                    var ix = Math.Min(oldText.Length, textIndex.Value);
+                    string a = oldText.Substring(0, ix).Trim();
+                    string b = oldText.Substring(ix).Trim();
 
                     if (oldText.TrimStart().StartsWith("<i>", StringComparison.Ordinal) && oldText.TrimEnd().EndsWith("</i>", StringComparison.Ordinal) &&
                         Utilities.CountTagInText(oldText, "<i>") == 1 && Utilities.CountTagInText(oldText, "</i>") == 1)