DeepL translation works

ffmpeg/src/main/java/com/github/gtache/autosubtitle/ffmpeg/FFmpegVideoConverter.java

@@ -128,7 +128,7 @@ public class FFmpegVideoConverter extends AbstractProcessRunner implements Video
     }
 
     private SubtitleConverter<?> getSubtitleConverter() {
-        return converterProvider.getConverter(preferences.get("outputFormat", "ass"));
+        return converterProvider.getConverter(preferences.get("outputFormat", "srt"));
     }
 
     private static String escapeVF(final String path) {