Add new sub format - thx Lukas :)

LanguageMaster.xml

@@ -406,7 +406,7 @@ Note: Do check free disk space.</WaveFileMalformed>
     <DisplayStandardCode>Display standard code</DisplayStandardCode>
     <ColorRequiresTeletext>Colors require teletext!</ColorRequiresTeletext>
     <AlignmentRequiresTeletext>Alignment requires teletext!</AlignmentRequiresTeletext>
-    <TeletextCharsShouldBe38>'Max# of chars per row' for Teletext should be 38!</TeletextCharsShouldBe38>
+    <TeletextCharsShouldBe38>'Max# of chars per row' for teletext should be 38!</TeletextCharsShouldBe38>
     <CharacterCodeTable>Character table</CharacterCodeTable>
     <LanguageCode>Language code</LanguageCode>
     <OriginalProgramTitle>Original program title</OriginalProgramTitle>

libse/SubtitleFormats/Json.cs

@@ -10,7 +10,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
 
         public override string Name => "JSON";
 
-        public static string EncodeJsonText(string text)
+        public static string EncodeJsonText(string text, string newLineCharacter = "<br />")
         {
             var sb = new StringBuilder(text.Length);
             foreach (var c in text)
@@ -28,7 +28,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                         break;
                 }
             }
-            return sb.ToString().Replace(Environment.NewLine, "<br />");
+            return sb.ToString().Replace(Environment.NewLine, newLineCharacter);
         }
 
         public static string DecodeJsonText(string text)

libse/SubtitleFormats/JsonType18.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+
+namespace Nikse.SubtitleEdit.Core.SubtitleFormats
+{
+    public class JsonType18 : SubtitleFormat
+    {
+        public override string Extension => ".json";
+
+        public override string Name => "JSON Type 18";
+
+        public override string ToText(Subtitle subtitle, string title)
+        {
+            var sb = new StringBuilder(@"[");
+            int count = 0;
+            foreach (var p in subtitle.Paragraphs)
+            {
+                if (count > 0)
+                {
+                    sb.Append(',');
+                }
+                count++;
+                sb.AppendLine();
+                sb.AppendLine("  {");
+                sb.AppendLine($"    \"s\": {p.StartTime.TotalSeconds.ToString(CultureInfo.InvariantCulture)},");
+                sb.AppendLine($"    \"d\": {p.Duration.TotalSeconds.ToString(CultureInfo.InvariantCulture)},");
+                sb.AppendLine($"    \"n\": \"{Json.EncodeJsonText(p.Text, "\\n")}\"");
+                sb.Append("  }");
+            }
+            sb.AppendLine();
+            sb.Append(']');
+            return sb.ToString().Trim();
+        }
+
+        public override void LoadSubtitle(Subtitle subtitle, List<string> lines, string fileName)
+        {
+            _errorCount = 0;
+
+            var sb = new StringBuilder();
+            foreach (var s in lines)
+            {
+                sb.Append(s);
+            }
+
+            var text = sb.ToString().TrimStart();
+            if (!text.StartsWith("[", StringComparison.Ordinal))
+            {
+                return;
+            }
+
+            var parser = new SeJsonParser();
+            var elements = parser.GetArrayElements(text);
+            foreach (var element in elements)
+            {
+                var startTimeObject = parser.GetFirstObject(element, "s");
+                var durationTimeObject = parser.GetFirstObject(element, "d");
+                var s = parser.GetFirstObject(element, "n");
+                if (!string.IsNullOrEmpty(s) && !string.IsNullOrEmpty(startTimeObject) && !string.IsNullOrEmpty(durationTimeObject))
+                {
+                    if (double.TryParse(startTimeObject, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var startSeconds) &&
+                        double.TryParse(durationTimeObject, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var durationSeconds))
+                    {
+                        var pText = Json.DecodeJsonText(s);
+                        var p = new Paragraph(pText, startSeconds * 1000.0, (startSeconds + durationSeconds) * 1000.0);
+                        subtitle.Paragraphs.Add(p);
+                    }
+                    else
+                    {
+                        _errorCount++;
+                    }
+                }
+            }
+            subtitle.Renumber();
+        }
+    }
+}

libse/SubtitleFormats/SubtitleFormat.cs

@@ -120,6 +120,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                     new JsonType15(),
                     new JsonType16(),
                     new JsonType17(),
+                    new JsonType18(),
                     new KanopyHtml(),
                     new LambdaCap(),
                     new Lrc(),