diff --git a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/MuxerWrapper.java b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/MuxerWrapper.java
index 01f6283f7a..c6f549a812 100644
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/MuxerWrapper.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/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();
+    }
   }
 
   /**