diff --git a/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java b/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java
index f5ec9f120d..335f8374dd 100644
--- a/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java
+++ b/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java
@@ -338,6 +338,7 @@ public final class ImaAdsLoader
   private int lastVolumePercentage;
 
   private AdsManager adsManager;
+  private boolean initializedAdsManager;
   private AdLoadException pendingAdLoadError;
   private Timeline timeline;
   private long contentDurationMs;
@@ -613,8 +614,8 @@ public final class ImaAdsLoader
         adsManager.resume();
       }
     } else if (adsManager != null) {
-      // Ads have loaded but the ads manager is not initialized.
-      startAdPlayback();
+      adPlaybackState = new AdPlaybackState(getAdGroupTimesUs(adsManager.getAdCuePoints()));
+      updateAdPlaybackState();
     } else {
       // Ads haven't loaded yet, so request them.
       requestAds(adViewGroup);
@@ -688,7 +689,8 @@ public final class ImaAdsLoader
     if (player != null) {
       // If a player is attached already, start playback immediately.
       try {
-        startAdPlayback();
+        adPlaybackState = new AdPlaybackState(getAdGroupTimesUs(adsManager.getAdCuePoints()));
+        updateAdPlaybackState();
       } catch (Exception e) {
         maybeNotifyInternalError("onAdsManagerLoaded", e);
       }
@@ -968,6 +970,10 @@ public final class ImaAdsLoader
     if (contentDurationUs != C.TIME_UNSET) {
       adPlaybackState = adPlaybackState.withContentDurationUs(contentDurationUs);
     }
+    if (!initializedAdsManager && adsManager != null) {
+      initializedAdsManager = true;
+      initializeAdsManager();
+    }
     onPositionDiscontinuity(Player.DISCONTINUITY_REASON_INTERNAL);
   }
 
@@ -1041,7 +1047,7 @@ public final class ImaAdsLoader
 
   // Internal methods.
 
-  private void startAdPlayback() {
+  private void initializeAdsManager() {
     AdsRenderingSettings adsRenderingSettings = imaFactory.createAdsRenderingSettings();
     adsRenderingSettings.setEnablePreloading(ENABLE_PRELOADING);
     adsRenderingSettings.setMimeTypes(supportedMimeTypes);
@@ -1056,10 +1062,9 @@ public final class ImaAdsLoader
       adsRenderingSettings.setUiElements(adUiElements);
     }
 
-    // Set up the ad playback state, skipping ads based on the start position as required.
+    // Skip ads based on the start position as required.
     long[] adGroupTimesUs = getAdGroupTimesUs(adsManager.getAdCuePoints());
-    adPlaybackState = new AdPlaybackState(adGroupTimesUs);
-    long contentPositionMs = player.getCurrentPosition();
+    long contentPositionMs = player.getContentPosition();
     int adGroupIndexForPosition =
         adPlaybackState.getAdGroupIndexForPositionUs(C.msToUs(contentPositionMs));
     if (adGroupIndexForPosition > 0 && adGroupIndexForPosition != C.INDEX_UNSET) {
@@ -1093,7 +1098,6 @@ public final class ImaAdsLoader
       pendingContentPositionMs = contentPositionMs;
     }
 
-    // Start ad playback.
     adsManager.init(adsRenderingSettings);
     updateAdPlaybackState();
     if (DEBUG) {
diff --git a/extensions/ima/src/test/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoaderTest.java b/extensions/ima/src/test/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoaderTest.java
index 1e1935c63a..4b2020a7d5 100644
--- a/extensions/ima/src/test/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoaderTest.java
+++ b/extensions/ima/src/test/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoaderTest.java
@@ -143,7 +143,8 @@ public class ImaAdsLoaderTest {
     assertThat(adsLoaderListener.adPlaybackState)
         .isEqualTo(
             new AdPlaybackState(/* adGroupTimesUs= */ 0)
-                .withAdDurationsUs(PREROLL_ADS_DURATIONS_US));
+                .withAdDurationsUs(PREROLL_ADS_DURATIONS_US)
+                .withContentDurationUs(CONTENT_DURATION_US));
   }
 
   @Test