diff --git a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java
index ad917b23d5..194d06fafa 100644
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/SilentAudioGenerator.java
@@ -16,19 +16,21 @@
 
 package com.google.android.exoplayer2.transformer;
 
+import com.google.android.exoplayer2.C;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 
 /* package */ final class SilentAudioGenerator {
-  private static final int DEFAULT_BUFFER_SIZE = 4096;
+  private static final int DEFAULT_BUFFER_SIZE_FRAMES = 1024;
 
   private final ByteBuffer internalBuffer;
 
   private long remainingBytesToOutput;
 
   public SilentAudioGenerator(long totalDurationUs, long sampleRate, int frameSize) {
-    remainingBytesToOutput = (sampleRate * frameSize * totalDurationUs) / 1_000_000L;
-    internalBuffer = ByteBuffer.allocate(DEFAULT_BUFFER_SIZE).order(ByteOrder.nativeOrder());
+    remainingBytesToOutput = frameSize * ((sampleRate * totalDurationUs) / C.MICROS_PER_SECOND);
+    internalBuffer =
+        ByteBuffer.allocate(DEFAULT_BUFFER_SIZE_FRAMES * frameSize).order(ByteOrder.nativeOrder());
     internalBuffer.flip();
   }
 
diff --git a/testdata/src/test/assets/transformerdumps/mp4/sample.mp4.silentaudio.dump b/testdata/src/test/assets/transformerdumps/mp4/sample.mp4.silentaudio.dump
index f4685803b7..4e2ac6e637 100644
--- a/testdata/src/test/assets/transformerdumps/mp4/sample.mp4.silentaudio.dump
+++ b/testdata/src/test/assets/transformerdumps/mp4/sample.mp4.silentaudio.dump
@@ -370,8 +370,8 @@ sample:
   presentationTimeUs = 998459
 sample:
   trackIndex = 1
-  dataHashCode = -1029274849
-  size = 409
+  dataHashCode = -587391743
+  size = 408
   isKeyFrame = true
   presentationTimeUs = 1021679
 sample: