diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index ae006ebdde..b53b2f6226 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -2,6 +2,13 @@
 
 ### dev-v2 (not yet released)
 
+*   Core Library:
+    *   Add protected method `DefaultRenderersFactory.getCodecAdapterFactory()`
+        so that subclasses of `DefaultRenderersFactory` that override
+        `buildVideoRenderers()` or `buildAudioRenderers()` can access the codec
+        adapter factory and pass it to `MediaCodecRenderer` instances they
+        create.
+
 ### 2.16.0 (2021-11-04)
 
 *   Core Library:
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/DefaultRenderersFactory.java b/library/core/src/main/java/com/google/android/exoplayer2/DefaultRenderersFactory.java
index 03ccc297a8..ca205c2901 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/DefaultRenderersFactory.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/DefaultRenderersFactory.java
@@ -29,6 +29,7 @@ import com.google.android.exoplayer2.audio.DefaultAudioSink;
 import com.google.android.exoplayer2.audio.DefaultAudioSink.DefaultAudioProcessorChain;
 import com.google.android.exoplayer2.audio.MediaCodecAudioRenderer;
 import com.google.android.exoplayer2.mediacodec.DefaultMediaCodecAdapterFactory;
+import com.google.android.exoplayer2.mediacodec.MediaCodecAdapter;
 import com.google.android.exoplayer2.mediacodec.MediaCodecSelector;
 import com.google.android.exoplayer2.metadata.MetadataOutput;
 import com.google.android.exoplayer2.metadata.MetadataRenderer;
@@ -368,7 +369,7 @@ public class DefaultRenderersFactory implements RenderersFactory {
     MediaCodecVideoRenderer videoRenderer =
         new MediaCodecVideoRenderer(
             context,
-            codecAdapterFactory,
+            getCodecAdapterFactory(),
             mediaCodecSelector,
             allowedVideoJoiningTimeMs,
             enableDecoderFallback,
@@ -488,7 +489,7 @@ public class DefaultRenderersFactory implements RenderersFactory {
     MediaCodecAudioRenderer audioRenderer =
         new MediaCodecAudioRenderer(
             context,
-            codecAdapterFactory,
+            getCodecAdapterFactory(),
             mediaCodecSelector,
             enableDecoderFallback,
             eventHandler,
@@ -655,4 +656,12 @@ public class DefaultRenderersFactory implements RenderersFactory {
             ? DefaultAudioSink.OFFLOAD_MODE_ENABLED_GAPLESS_REQUIRED
             : DefaultAudioSink.OFFLOAD_MODE_DISABLED);
   }
+
+  /**
+   * Returns the {@link MediaCodecAdapter.Factory} that will be used when creating {@link
+   * com.google.android.exoplayer2.mediacodec.MediaCodecRenderer} instances.
+   */
+  protected MediaCodecAdapter.Factory getCodecAdapterFactory() {
+    return codecAdapterFactory;
+  }
 }