diff --git a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/DefaultEncoderFactory.java b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/DefaultEncoderFactory.java
index e822c6caed..494e40afcf 100644
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/DefaultEncoderFactory.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/DefaultEncoderFactory.java
@@ -56,7 +56,7 @@ public final class DefaultEncoderFactory implements Codec.EncoderFactory {
   public static final class Builder {
     private final Context context;
 
-    @Nullable private EncoderSelector encoderSelector;
+    @Nullable private EncoderSelector videoEncoderSelector;
     @Nullable private VideoEncoderSettings requestedVideoEncoderSettings;
     private boolean enableFallback;
 
@@ -72,8 +72,8 @@ public final class DefaultEncoderFactory implements Codec.EncoderFactory {
      * <p>The default value is {@link EncoderSelector#DEFAULT}.
      */
     @CanIgnoreReturnValue
-    public Builder setVideoEncoderSelector(EncoderSelector encoderSelector) {
-      this.encoderSelector = encoderSelector;
+    public Builder setVideoEncoderSelector(EncoderSelector videoEncoderSelector) {
+      this.videoEncoderSelector = videoEncoderSelector;
       return this;
     }
 
@@ -121,14 +121,14 @@ public final class DefaultEncoderFactory implements Codec.EncoderFactory {
     /** Creates an instance of {@link DefaultEncoderFactory}, using defaults if values are unset. */
     @SuppressWarnings("deprecation")
     public DefaultEncoderFactory build() {
-      if (encoderSelector == null) {
-        encoderSelector = EncoderSelector.DEFAULT;
+      if (videoEncoderSelector == null) {
+        videoEncoderSelector = EncoderSelector.DEFAULT;
       }
       if (requestedVideoEncoderSettings == null) {
         requestedVideoEncoderSettings = VideoEncoderSettings.DEFAULT;
       }
       return new DefaultEncoderFactory(
-          context, encoderSelector, requestedVideoEncoderSettings, enableFallback);
+          context, videoEncoderSelector, requestedVideoEncoderSettings, enableFallback);
     }
   }
 
@@ -450,6 +450,7 @@ public final class DefaultEncoderFactory implements Codec.EncoderFactory {
   /** Returns a list of encoders that support the requested resolution most closely. */
   private static ImmutableList<MediaCodecInfo> filterEncodersByResolution(
       List<MediaCodecInfo> encoders, String mimeType, int requestedWidth, int requestedHeight) {
+    // TODO(b/267740292): Investigate the fallback logic that might prefer software encoders.
     return filterEncoders(
         encoders,
         /* cost= */ (encoderInfo) -> {
diff --git a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EncoderSelector.java b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EncoderSelector.java
index 0527652e07..df0c716fed 100644
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EncoderSelector.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EncoderSelector.java
@@ -20,15 +20,29 @@ import android.media.MediaCodec;
 import android.media.MediaCodecInfo;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Iterables;
 
 /** Selector of {@link MediaCodec} encoder instances. */
 public interface EncoderSelector {
 
   /**
-   * Default implementation of {@link EncoderSelector}, which returns the preferred encoders for the
+   * Default implementation of {@code EncoderSelector}, which returns the preferred encoders for the
    * given {@link MimeTypes MIME type}.
+   *
+   * <p>The {@code EncoderSelector} selection result contains only hardware encoders if they exist,
+   * or only software encoders otherwise.
    */
-  EncoderSelector DEFAULT = EncoderUtil::getSupportedEncoders;
+  EncoderSelector DEFAULT =
+      mimeType -> {
+        ImmutableList<MediaCodecInfo> supportedEncoders =
+            EncoderUtil.getSupportedEncoders(mimeType);
+        ImmutableList<MediaCodecInfo> supportedHardwareEncoders =
+            ImmutableList.copyOf(
+                Iterables.filter(
+                    supportedEncoders,
+                    encoderInfo -> EncoderUtil.isHardwareAccelerated(encoderInfo, mimeType)));
+        return supportedHardwareEncoders.isEmpty() ? supportedEncoders : supportedHardwareEncoders;
+      };
 
   /**
    * Returns a list of encoders that can encode media in the specified {@code mimeType}, in priority