Fixes conversion of files containing semicolons

src/main/java/net/knarcraft/ffmpegconverter/converter/AnimeConverter.java

@@ -113,7 +113,7 @@ public class AnimeConverter extends Converter {
             command.add("-map");
             command.add("0:" + videoStream.getAbsoluteIndex());
             command.add("-vf");
-            String safeFileName = fileName.replace("'", "\\\\\\'").replace("]", "\\]").replace("[", "\\[");
+            String safeFileName = escapeSpecialCharactersInFileName(fileName);
             String subtitleCommand = String.format("subtitles=\"%s\"", safeFileName);
             command.add(subtitleCommand);
         } else {

src/main/java/net/knarcraft/ffmpegconverter/converter/Converter.java

@@ -424,6 +424,14 @@ public abstract class Converter {
         return new SubtitleStream(codecName, absoluteIndex, relativeIndex, language, title);
     }
 
+    static String escapeSpecialCharactersInFileName(String fileName) {
+        return fileName.replace("'", "\\\\\\'")
+                .replace(",", "\\\\\\,")
+                .replace(";", "\\\\\\;")
+                .replace("]", "\\]")
+                .replace("[", "\\[");
+    }
+    
     static void print(String input) throws IOException {
         if (!input.equals("")) {
             writer.write(input);