diff --git a/libraries/effect/src/main/java/androidx/media3/effect/DebugTraceUtil.java b/libraries/effect/src/main/java/androidx/media3/effect/DebugTraceUtil.java
index f5d875dbbc..b1a02ae67c 100644
--- a/libraries/effect/src/main/java/androidx/media3/effect/DebugTraceUtil.java
+++ b/libraries/effect/src/main/java/androidx/media3/effect/DebugTraceUtil.java
@@ -228,7 +228,8 @@ public final class DebugTraceUtil {
                   EVENT_CAN_WRITE_SAMPLE_AUDIO,
                   EVENT_WRITE_SAMPLE_AUDIO,
                   EVENT_TRACK_ENDED_AUDIO,
-                  EVENT_TRACK_ENDED_VIDEO))
+                  EVENT_TRACK_ENDED_VIDEO,
+                  EVENT_OUTPUT_ENDED))
           .buildOrThrow();
 
   private static final int MAX_FIRST_LAST_LOGS = 10;
diff --git a/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java b/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
index 2f69b18a6b..9762a8b564 100644
--- a/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
+++ b/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
@@ -27,6 +27,7 @@ import static androidx.media3.common.util.Util.usToMs;
 import static androidx.media3.effect.DebugTraceUtil.COMPONENT_MUXER;
 import static androidx.media3.effect.DebugTraceUtil.EVENT_CAN_WRITE_SAMPLE_AUDIO;
 import static androidx.media3.effect.DebugTraceUtil.EVENT_CAN_WRITE_SAMPLE_VIDEO;
+import static androidx.media3.effect.DebugTraceUtil.EVENT_OUTPUT_ENDED;
 import static androidx.media3.effect.DebugTraceUtil.EVENT_TRACK_ENDED_AUDIO;
 import static androidx.media3.effect.DebugTraceUtil.EVENT_TRACK_ENDED_VIDEO;
 import static androidx.media3.effect.DebugTraceUtil.EVENT_WRITE_SAMPLE_AUDIO;
@@ -612,6 +613,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
       trackTypeToInfo.delete(trackType);
       if (trackTypeToInfo.size() == 0) {
         isEnded = true;
+        DebugTraceUtil.logEvent(COMPONENT_MUXER, EVENT_OUTPUT_ENDED, maxEndedTrackTimeUs);
       }
     }