diff --git a/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/BaseUrlExclusionList.java b/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/BaseUrlExclusionList.java
index ebf923e23bd..2047e6ba41f 100644
--- a/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/BaseUrlExclusionList.java
+++ b/libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/BaseUrlExclusionList.java
@@ -126,7 +126,11 @@ public int getPriorityCountAfterExclusion(List<BaseUrl> baseUrls) {
     Set<Integer> priorities = new HashSet<>();
     List<BaseUrl> includedBaseUrls = applyExclusions(baseUrls);
     for (int i = 0; i < includedBaseUrls.size(); i++) {
-      priorities.add(includedBaseUrls.get(i).priority);
+      int priority = includedBaseUrls.get(i).priority;
+      if (priority == BaseUrl.PRIORITY_UNSET) {
+        return includedBaseUrls.size();
+      }
+      priorities.add(priority);
     }
     return priorities.size();
   }
@@ -140,7 +144,11 @@ public int getPriorityCountAfterExclusion(List<BaseUrl> baseUrls) {
   public static int getPriorityCount(List<BaseUrl> baseUrls) {
     Set<Integer> priorities = new HashSet<>();
     for (int i = 0; i < baseUrls.size(); i++) {
-      priorities.add(baseUrls.get(i).priority);
+      int priority = baseUrls.get(i).priority;
+      if (priority == BaseUrl.PRIORITY_UNSET) {
+        return baseUrls.size();
+      }
+      priorities.add(priority);
     }
     return priorities.size();
   }
diff --git a/libraries/exoplayer_dash/src/test/java/androidx/media3/exoplayer/dash/BaseUrlExclusionListTest.java b/libraries/exoplayer_dash/src/test/java/androidx/media3/exoplayer/dash/BaseUrlExclusionListTest.java
index 4e98d8b6cad..05c8333732a 100644
--- a/libraries/exoplayer_dash/src/test/java/androidx/media3/exoplayer/dash/BaseUrlExclusionListTest.java
+++ b/libraries/exoplayer_dash/src/test/java/androidx/media3/exoplayer/dash/BaseUrlExclusionListTest.java
@@ -17,6 +17,7 @@
 
 import static androidx.media3.exoplayer.dash.manifest.BaseUrl.DEFAULT_DVB_PRIORITY;
 import static androidx.media3.exoplayer.dash.manifest.BaseUrl.DEFAULT_WEIGHT;
+import static androidx.media3.exoplayer.dash.manifest.BaseUrl.PRIORITY_UNSET;
 import static androidx.media3.exoplayer.upstream.DefaultLoadErrorHandlingPolicy.DEFAULT_LOCATION_EXCLUSION_MS;
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.ArgumentMatchers.anyInt;
@@ -274,4 +275,85 @@ public void getPriorityCount_correctPriorityCount() {
     assertThat(BaseUrlExclusionList.getPriorityCount(baseUrls)).isEqualTo(3);
     assertThat(BaseUrlExclusionList.getPriorityCount(ImmutableList.of())).isEqualTo(0);
   }
+
+  @Test
+  public void getPriorityCountAfterExclusion_priorityUnset_correctPriorityCount() {
+    List<BaseUrl> baseUrls =
+        ImmutableList.of(
+            new BaseUrl(
+                /* url= */ "a",
+                /* serviceLocation= */ "a",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1),
+            new BaseUrl(
+                /* url= */ "b",
+                /* serviceLocation= */ "b",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1),
+            new BaseUrl(
+                /* url= */ "c",
+                /* serviceLocation= */ "c",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1),
+            new BaseUrl(
+                /* url= */ "d",
+                /* serviceLocation= */ "d",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1),
+            new BaseUrl(
+                /* url= */ "e",
+                /* serviceLocation= */ "e",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1));
+    BaseUrlExclusionList baseUrlExclusionList = new BaseUrlExclusionList();
+
+    // Empty base URL list.
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(ImmutableList.of()))
+        .isEqualTo(0);
+
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(baseUrls)).isEqualTo(5);
+    // Exclude base urls.
+    baseUrlExclusionList.exclude(baseUrls.get(0), DEFAULT_LOCATION_EXCLUSION_MS);
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(baseUrls)).isEqualTo(4);
+    baseUrlExclusionList.exclude(baseUrls.get(1), 2 * DEFAULT_LOCATION_EXCLUSION_MS);
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(baseUrls)).isEqualTo(3);
+    baseUrlExclusionList.exclude(baseUrls.get(3), 3 * DEFAULT_LOCATION_EXCLUSION_MS);
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(baseUrls)).isEqualTo(2);
+    // Time passes.
+    ShadowSystemClock.advanceBy(Duration.ofMillis(DEFAULT_LOCATION_EXCLUSION_MS));
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(baseUrls)).isEqualTo(3);
+    ShadowSystemClock.advanceBy(Duration.ofMillis(DEFAULT_LOCATION_EXCLUSION_MS));
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(baseUrls)).isEqualTo(4);
+    ShadowSystemClock.advanceBy(Duration.ofMillis(DEFAULT_LOCATION_EXCLUSION_MS));
+    assertThat(baseUrlExclusionList.getPriorityCountAfterExclusion(baseUrls)).isEqualTo(5);
+  }
+
+  @Test
+  public void getPriorityCount_priorityUnset_correctPriorityCount() {
+    List<BaseUrl> baseUrls =
+        ImmutableList.of(
+            new BaseUrl(
+                /* url= */ "a",
+                /* serviceLocation= */ "a",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1),
+            new BaseUrl(
+                /* url= */ "b",
+                /* serviceLocation= */ "b",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1),
+            new BaseUrl(
+                /* url= */ "c",
+                /* serviceLocation= */ "c",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1),
+            new BaseUrl(
+                /* url= */ "d",
+                /* serviceLocation= */ "d",
+                /* priority= */ PRIORITY_UNSET,
+                /* weight= */ 1));
+
+    assertThat(BaseUrlExclusionList.getPriorityCount(baseUrls)).isEqualTo(4);
+    assertThat(BaseUrlExclusionList.getPriorityCount(ImmutableList.of())).isEqualTo(0);
+  }
 }