diff --git a/libraries/ui/src/main/java/androidx/media3/ui/LegacyPlayerControlView.java b/libraries/ui/src/main/java/androidx/media3/ui/LegacyPlayerControlView.java
index ab954343cc..adecd7df5c 100644
--- a/libraries/ui/src/main/java/androidx/media3/ui/LegacyPlayerControlView.java
+++ b/libraries/ui/src/main/java/androidx/media3/ui/LegacyPlayerControlView.java
@@ -561,13 +561,10 @@ public class LegacyPlayerControlView extends FrameLayout {
   }
 
   /**
-   * Sets whether the time bar should show all windows, as opposed to just the current one. If the
-   * timeline has a period with unknown duration or more than {@link
-   * #MAX_WINDOWS_FOR_MULTI_WINDOW_TIME_BAR} windows the time bar will fall back to showing a single
-   * window.
-   *
-   * @param showMultiWindowTimeBar Whether the time bar should show all windows.
+   * @deprecated Replace multi-window time bar display by merging source windows together instead,
+   *     for example using ExoPlayer's {@code ConcatenatingMediaSource2}.
    */
+  @Deprecated
   public void setShowMultiWindowTimeBar(boolean showMultiWindowTimeBar) {
     this.showMultiWindowTimeBar = showMultiWindowTimeBar;
     updateTimeline();
diff --git a/libraries/ui/src/main/java/androidx/media3/ui/PlayerControlView.java b/libraries/ui/src/main/java/androidx/media3/ui/PlayerControlView.java
index c8424ca82e..81f90398a3 100644
--- a/libraries/ui/src/main/java/androidx/media3/ui/PlayerControlView.java
+++ b/libraries/ui/src/main/java/androidx/media3/ui/PlayerControlView.java
@@ -663,13 +663,10 @@ public class PlayerControlView extends FrameLayout {
   }
 
   /**
-   * Sets whether the time bar should show all windows, as opposed to just the current one. If the
-   * timeline has a period with unknown duration or more than {@link
-   * #MAX_WINDOWS_FOR_MULTI_WINDOW_TIME_BAR} windows the time bar will fall back to showing a single
-   * window.
-   *
-   * @param showMultiWindowTimeBar Whether the time bar should show all windows.
+   * @deprecated Replace multi-window time bar display by merging source windows together instead,
+   *     for example using ExoPlayer's {@code ConcatenatingMediaSource2}.
    */
+  @Deprecated
   public void setShowMultiWindowTimeBar(boolean showMultiWindowTimeBar) {
     this.showMultiWindowTimeBar = showMultiWindowTimeBar;
     updateTimeline();
diff --git a/libraries/ui/src/main/java/androidx/media3/ui/PlayerView.java b/libraries/ui/src/main/java/androidx/media3/ui/PlayerView.java
index 0c726e4eaa..0c8be97f38 100644
--- a/libraries/ui/src/main/java/androidx/media3/ui/PlayerView.java
+++ b/libraries/ui/src/main/java/androidx/media3/ui/PlayerView.java
@@ -1113,10 +1113,11 @@ public class PlayerView extends FrameLayout implements AdViewProvider {
   }
 
   /**
-   * Sets whether the time bar should show all windows, as opposed to just the current one.
-   *
-   * @param showMultiWindowTimeBar Whether to show all windows.
+   * @deprecated Replace multi-window time bar display by merging source windows together instead,
+   *     for example using ExoPlayer's {@code ConcatenatingMediaSource2}.
    */
+  @SuppressWarnings("deprecation") // Forwarding to deprecated method.
+  @Deprecated
   @UnstableApi
   public void setShowMultiWindowTimeBar(boolean showMultiWindowTimeBar) {
     Assertions.checkStateNotNull(controller);