diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 6b28d6b1ba..66c453707e 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -26,6 +26,9 @@
         ([#8906](https://github.com/google/ExoPlayer/issues/8906)).
     *   Move `Player.addListener(EventListener)` and
         `Player.removeListener(EventListener)` out of `Player` into subclasses.
+    *   Rename `MimeTypes.AUDIO_DTS_UHD` to `MimeTypes.AUDIO_DTS_X` and add
+        required profile to its value
+        ([#9429](https://github.com/google/ExoPlayer/issues/9429)).
 *   Extractors:
     *   Support TS packets without PTS flag
         ([#9294](https://github.com/google/ExoPlayer/issues/9294)).
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 f729621172..3e82accd71 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
@@ -78,7 +78,7 @@ 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_UHD = BASE_TYPE_AUDIO + "/vnd.dts.uhd";
+  public static final String AUDIO_DTS_X = BASE_TYPE_AUDIO + "/vnd.dts.uhd;profile=p2";
   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";
@@ -410,7 +410,7 @@ public final class MimeTypes {
     } else if (codec.startsWith("dtsh") || codec.startsWith("dtsl")) {
       return MimeTypes.AUDIO_DTS_HD;
     } else if (codec.startsWith("dtsx")) {
-      return MimeTypes.AUDIO_DTS_UHD;
+      return MimeTypes.AUDIO_DTS_X;
     } else if (codec.startsWith("opus")) {
       return MimeTypes.AUDIO_OPUS;
     } else if (codec.startsWith("vorbis")) {
diff --git a/library/common/src/test/java/com/google/android/exoplayer2/util/MimeTypesTest.java b/library/common/src/test/java/com/google/android/exoplayer2/util/MimeTypesTest.java
index 490a68d0ab..3309c972c4 100644
--- a/library/common/src/test/java/com/google/android/exoplayer2/util/MimeTypesTest.java
+++ b/library/common/src/test/java/com/google/android/exoplayer2/util/MimeTypesTest.java
@@ -140,7 +140,7 @@ public final class MimeTypesTest {
     assertThat(MimeTypes.getMediaMimeType("dtse")).isEqualTo(MimeTypes.AUDIO_DTS_EXPRESS);
     assertThat(MimeTypes.getMediaMimeType("dtsh")).isEqualTo(MimeTypes.AUDIO_DTS_HD);
     assertThat(MimeTypes.getMediaMimeType("dtsl")).isEqualTo(MimeTypes.AUDIO_DTS_HD);
-    assertThat(MimeTypes.getMediaMimeType("dtsx")).isEqualTo(MimeTypes.AUDIO_DTS_UHD);
+    assertThat(MimeTypes.getMediaMimeType("dtsx")).isEqualTo(MimeTypes.AUDIO_DTS_X);
     assertThat(MimeTypes.getMediaMimeType("opus")).isEqualTo(MimeTypes.AUDIO_OPUS);
     assertThat(MimeTypes.getMediaMimeType("vorbis")).isEqualTo(MimeTypes.AUDIO_VORBIS);
     assertThat(MimeTypes.getMediaMimeType("mp4a")).isEqualTo(MimeTypes.AUDIO_AAC);
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 5964c95164..3d392070da 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
@@ -1374,7 +1374,7 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
     } else if (atomType == Atom.TYPE_dtse) {
       mimeType = MimeTypes.AUDIO_DTS_EXPRESS;
     } else if (atomType == Atom.TYPE_dtsx) {
-      mimeType = MimeTypes.AUDIO_DTS_UHD;
+      mimeType = MimeTypes.AUDIO_DTS_X;
     } else if (atomType == Atom.TYPE_samr) {
       mimeType = MimeTypes.AUDIO_AMR_NB;
     } else if (atomType == Atom.TYPE_sawb) {