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 b96f7f7d53..9f8a854449 100644
--- a/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
+++ b/libraries/transformer/src/main/java/androidx/media3/transformer/MuxerWrapper.java
@@ -195,6 +195,9 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
    */
   public void endTrack(@C.TrackType int trackType) {
     trackTypeToIndex.delete(trackType);
+    if (trackTypeToIndex.size() == 0) {
+      abortScheduledExecutorService.shutdownNow();
+    }
   }
 
   /**