Merge pull request #96 from Bleuzen/enable_opus

Enable opus format 251

Author: theScrabi

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  ///