-Fixed extraction to only output manual and autogenerated scripts, omitting autotranslated scripts.

src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamExtractor.java

@@ -735,29 +735,26 @@ public class YoutubeStreamExtractor extends StreamExtractor {
 
         final JsonObject renderer = captions.getObject("playerCaptionsTracklistRenderer");
         final JsonArray captionsArray = renderer.getArray("captionTracks");
+
+        // todo: use this to apply auto translation to different language from a source language
         final JsonArray autoCaptionsArray = renderer.getArray("translationLanguages");
 
         final int captionsSize = captionsArray.size();
         // Should not happen, if there is the "captions" object, it should always has some captions in it
         if(captionsSize == 0) return Collections.emptyList();
         // Obtain the base url, this only needs to be done once
-        final String baseUrl = captionsArray.getObject(0).getString("baseUrl");
-
-        Set<String> manualLanguageCodes = new HashSet<>();
-        for (int i = 0; i < captionsSize; i++) {
-            manualLanguageCodes.add(captionsArray.getObject(i).getString("languageCode"));
-        }
-        Set<String> automaticLanguageCodes = new HashSet<>();
-        for (int i = 0; i < autoCaptionsArray.size(); i++) {
-            automaticLanguageCodes.add(autoCaptionsArray.getObject(i).getString("languageCode"));
-        }
 
         List<Subtitles> result = new ArrayList<>();
-        result.addAll(getVideoSubtitlesUrl(baseUrl, new ArrayList<>(manualLanguageCodes),
+        for (int i = 0; i < captionsSize; i++) {
-                new ArrayList<>(automaticLanguageCodes), SubtitlesFormat.VTT));
+            final String languageCode = captionsArray.getObject(i).getString("languageCode");
-        result.addAll(getVideoSubtitlesUrl(baseUrl, new ArrayList<>(manualLanguageCodes),
+            final String baseUrl = captionsArray.getObject(i).getString("baseUrl");
-                new ArrayList<>(automaticLanguageCodes), SubtitlesFormat.TTML));
+            final boolean isAutoGenerated = captionsArray.getObject(i).getString("vssId").startsWith("a.");
-        // todo: add transcripts, they are currently omitted since they are incompatible with ExoPlayer
+
+            result.add(new Subtitles(SubtitlesFormat.TTML, languageCode, baseUrl, isAutoGenerated));
+            result.add(new Subtitles(SubtitlesFormat.VTT, languageCode, baseUrl, isAutoGenerated));
+            // todo: add transcripts, they are currently omitted since they are incompatible with ExoPlayer
+        }
+
         return result;
     }
     /*//////////////////////////////////////////////////////////////////////////