re-enable opus

Author: Bleuzen

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

@@ -34,18 +34,14 @@ public class ItagItem {
             ////////////////////////////////////////////////////////////////////
             // AUDIO     ID      ItagType          Format        Bitrate    ///
             //////////////////////////////////////////////////////////////////
-            // Disable Opus codec as it's not well supported in older devices
-//          new ItagItem(249, AUDIO, WEBMA, 50),
-//          new ItagItem(250, AUDIO, WEBMA, 70),
-//          new ItagItem(251, AUDIO, WEBMA, 160),
             new ItagItem(171, AUDIO, WEBMA, 128),
             new ItagItem(172, AUDIO, WEBMA, 256),
             new ItagItem(139, AUDIO, M4A, 48),
             new ItagItem(140, AUDIO, M4A, 128),
             new ItagItem(141, AUDIO, M4A, 256),
             new ItagItem(249, AUDIO, OPUS, 50),
             new ItagItem(250, AUDIO, OPUS, 70),
-            new ItagItem(160, AUDIO, OPUS, 160),
+            new ItagItem(251, AUDIO, OPUS, 160),
 
             /// VIDEO ONLY ////////////////////////////////////////////
             //           ID      Type     Format  Resolution  FPS  ///