added 64k hls stream

MediaBrowser.Api/Playback/Hls/BaseHlsService.cs

@@ -143,9 +143,9 @@ namespace MediaBrowser.Api.Playback.Hls
             builder.AppendLine(playlistUrl);
 
             // Low bitrate stream
-            //builder.AppendLine("#EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=64000");
-            //playlistUrl = "hls/" + Path.GetFileName(firstPlaylist).Replace(".m3u8", "-low/stream.m3u8");
-            //builder.AppendLine(playlistUrl);
+            builder.AppendLine("#EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=64000");
+            playlistUrl = "hls/" + Path.GetFileName(firstPlaylist).Replace(".m3u8", "-low/stream.m3u8");
+            builder.AppendLine(playlistUrl);
 
             return builder.ToString();
         }