diff --git a/playbacktests/src/main/java/com/google/android/exoplayer2/playbacktests/util/DebugSimpleExoPlayer.java b/playbacktests/src/main/java/com/google/android/exoplayer2/playbacktests/util/DebugSimpleExoPlayer.java
index ede172ad29..c530ab63c1 100644
--- a/playbacktests/src/main/java/com/google/android/exoplayer2/playbacktests/util/DebugSimpleExoPlayer.java
+++ b/playbacktests/src/main/java/com/google/android/exoplayer2/playbacktests/util/DebugSimpleExoPlayer.java
@@ -99,12 +99,14 @@ public class DebugSimpleExoPlayer extends SimpleExoPlayer {
 
     @Override
     protected void onQueueInputBuffer(DecoderInputBuffer buffer) {
+      super.onQueueInputBuffer(buffer);
       insertTimestamp(buffer.timeUs);
       maybeShiftTimestampsList();
     }
 
     @Override
     protected void onProcessedOutputBuffer(long presentationTimeUs) {
+      super.onProcessedOutputBuffer(presentationTimeUs);
       bufferCount++;
       long expectedTimestampUs = dequeueTimestamp();
       if (expectedTimestampUs != presentationTimeUs) {