diff --git a/library/common/src/main/java/com/google/android/exoplayer2/util/MimeTypes.java b/library/common/src/main/java/com/google/android/exoplayer2/util/MimeTypes.java
index 066cdc9ea44..b4de7e15ce1 100644
--- a/library/common/src/main/java/com/google/android/exoplayer2/util/MimeTypes.java
+++ b/library/common/src/main/java/com/google/android/exoplayer2/util/MimeTypes.java
@@ -76,6 +76,7 @@ public final class MimeTypes {
   public static final String AUDIO_DTS = BASE_TYPE_AUDIO + "/vnd.dts";
   public static final String AUDIO_DTS_HD = BASE_TYPE_AUDIO + "/vnd.dts.hd";
   public static final String AUDIO_DTS_EXPRESS = BASE_TYPE_AUDIO + "/vnd.dts.hd;profile=lbr";
+  public static final String AUDIO_DTS_X = BASE_TYPE_AUDIO + "/vnd.dts.uhd";
   public static final String AUDIO_VORBIS = BASE_TYPE_AUDIO + "/vorbis";
   public static final String AUDIO_OPUS = BASE_TYPE_AUDIO + "/opus";
   public static final String AUDIO_AMR = BASE_TYPE_AUDIO + "/amr";
@@ -380,8 +381,12 @@ public static String getMediaMimeType(@Nullable String codec) {
       return MimeTypes.AUDIO_E_AC3_JOC;
     } else if (codec.startsWith("ac-4") || codec.startsWith("dac4")) {
       return MimeTypes.AUDIO_AC4;
-    } else if (codec.startsWith("dtsc") || codec.startsWith("dtse")) {
+    } else if (codec.startsWith("dtsc")) {
       return MimeTypes.AUDIO_DTS;
+    } else if (codec.startsWith("dtse")) {
+      return MimeTypes.AUDIO_DTS_EXPRESS;
+    } else if (codec.startsWith("dtsx")) {
+      return MimeTypes.AUDIO_DTS_X;
     } else if (codec.startsWith("dtsh") || codec.startsWith("dtsl")) {
       return MimeTypes.AUDIO_DTS_HD;
     } else if (codec.startsWith("opus")) {
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/Atom.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/Atom.java
index 1cb554151f1..ffdab2f6e8c 100644
--- a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/Atom.java
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/Atom.java
@@ -162,6 +162,9 @@
   @SuppressWarnings("ConstantCaseForConstants")
   public static final int TYPE_dtse = 0x64747365;
 
+  @SuppressWarnings("ConstantCaseForConstants")
+  public static final int TYPE_dtsx = 0x64747378;
+
   @SuppressWarnings("ConstantCaseForConstants")
   public static final int TYPE_ddts = 0x64647473;
 
diff --git a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java
index 5da35527a5e..7156be96af6 100644
--- a/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java
+++ b/library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java
@@ -964,6 +964,7 @@ private static StsdData parseStsd(
           || childAtomType == Atom.TYPE_dtse
           || childAtomType == Atom.TYPE_dtsh
           || childAtomType == Atom.TYPE_dtsl
+          || childAtomType == Atom.TYPE_dtsx
           || childAtomType == Atom.TYPE_samr
           || childAtomType == Atom.TYPE_sawb
           || childAtomType == Atom.TYPE_lpcm
@@ -1368,6 +1369,8 @@ private static void parseAudioSampleEntry(
       mimeType = MimeTypes.AUDIO_DTS_HD;
     } else if (atomType == Atom.TYPE_dtse) {
       mimeType = MimeTypes.AUDIO_DTS_EXPRESS;
+    } else if (atomType == Atom.TYPE_dtsx) {
+      mimeType = MimeTypes.AUDIO_DTS_X;
     } else if (atomType == Atom.TYPE_samr) {
       mimeType = MimeTypes.AUDIO_AMR_NB;
     } else if (atomType == Atom.TYPE_sawb) {