diff -up chromium-51.0.2687.0/media/base/audio_codecs.cc.ac3-dts chromium-51.0.2687.0/media/base/audio_codecs.cc
--- chromium-51.0.2687.0/media/base/audio_codecs.cc.ac3-dts	2016-03-22 23:01:01.000000000 +0100
+++ chromium-51.0.2687.0/media/base/audio_codecs.cc	2016-03-23 18:19:14.903959089 +0100
@@ -43,6 +43,8 @@ std::string GetCodecName(AudioCodec code
       return "alac";
     case kCodecAC3:
       return "ac3";
+    case kCodecDTS:
+      return "dts";
   }
   NOTREACHED();
   return "";
diff -up chromium-51.0.2687.0/media/base/audio_codecs.h.ac3-dts chromium-51.0.2687.0/media/base/audio_codecs.h
--- chromium-51.0.2687.0/media/base/audio_codecs.h.ac3-dts	2016-03-22 23:01:01.000000000 +0100
+++ chromium-51.0.2687.0/media/base/audio_codecs.h	2016-03-23 18:18:33.765701074 +0100
@@ -32,13 +32,14 @@ enum AudioCodec {
   kCodecPCM_ALAW = 14,
   kCodecALAC = 15,
   kCodecAC3 = 16,
+  kCodecDTS = 17,
   // DO NOT ADD RANDOM AUDIO CODECS!
   //
   // The only acceptable time to add a new codec is if there is production code
   // that uses said codec in the same CL.
 
   // Must always be equal to the largest entry ever logged.
-  kAudioCodecMax = kCodecAC3,
+  kAudioCodecMax = kCodecDTS,
 };
 
 std::string MEDIA_EXPORT GetCodecName(AudioCodec codec);
diff -up chromium-51.0.2687.0/media/ffmpeg/ffmpeg_common.cc.ac3-dts chromium-51.0.2687.0/media/ffmpeg/ffmpeg_common.cc
--- chromium-51.0.2687.0/media/ffmpeg/ffmpeg_common.cc.ac3-dts	2016-03-22 23:01:01.000000000 +0100
+++ chromium-51.0.2687.0/media/ffmpeg/ffmpeg_common.cc	2016-03-23 18:13:42.226118362 +0100
@@ -117,6 +117,8 @@ static AudioCodec CodecIDToAudioCodec(AV
       return kCodecOpus;
     case AV_CODEC_ID_ALAC:
       return kCodecALAC;
+    case AV_CODEC_ID_DTS:
+      return kCodecDTS;
     default:
       DVLOG(1) << "Unknown audio CodecID: " << codec_id;
   }
@@ -168,6 +170,10 @@ AVCodecID AudioCodecToCodecID(AudioCodec
       return AV_CODEC_ID_PCM_MULAW;
     case kCodecOpus:
       return AV_CODEC_ID_OPUS;
+    case kCodecAC3:
+      return AV_CODEC_ID_AC3;
+    case kCodecDTS:
+      return AV_CODEC_ID_DTS;
     default:
       DVLOG(1) << "Unknown AudioCodec: " << audio_codec;
   }