diff --git a/libraries/transformer/src/main/java/androidx/media3/transformer/FrameworkMuxer.java b/libraries/transformer/src/main/java/androidx/media3/transformer/FrameworkMuxer.java
index 6668f380bc..428df2358f 100644
--- a/libraries/transformer/src/main/java/androidx/media3/transformer/FrameworkMuxer.java
+++ b/libraries/transformer/src/main/java/androidx/media3/transformer/FrameworkMuxer.java
@@ -45,15 +45,6 @@ import java.util.Map;
 
 /** {@link Muxer} implementation that uses a {@link MediaMuxer}. */
 /* package */ final class FrameworkMuxer implements Muxer {
-  public static final String MUXER_STOPPING_FAILED_ERROR_MESSAGE = "Failed to stop the MediaMuxer";
-
-  // MediaMuxer supported sample formats are documented in MediaMuxer.addTrack(MediaFormat).
-  private static final ImmutableList<String> SUPPORTED_VIDEO_SAMPLE_MIME_TYPES =
-      getSupportedVideoSampleMimeTypes();
-  private static final ImmutableList<String> SUPPORTED_AUDIO_SAMPLE_MIME_TYPES =
-      ImmutableList.of(MimeTypes.AUDIO_AAC, MimeTypes.AUDIO_AMR_NB, MimeTypes.AUDIO_AMR_WB);
-  private static final String TAG = "FrameworkMuxer";
-
   /** {@link Muxer.Factory} for {@link FrameworkMuxer}. */
   public static final class Factory implements Muxer.Factory {
     private long videoDurationUs;
@@ -105,6 +96,15 @@ import java.util.Map;
     }
   }
 
+  public static final String MUXER_STOPPING_FAILED_ERROR_MESSAGE = "Failed to stop the MediaMuxer";
+
+  // MediaMuxer supported sample formats are documented in MediaMuxer.addTrack(MediaFormat).
+  private static final ImmutableList<String> SUPPORTED_VIDEO_SAMPLE_MIME_TYPES =
+      getSupportedVideoSampleMimeTypes();
+  private static final ImmutableList<String> SUPPORTED_AUDIO_SAMPLE_MIME_TYPES =
+      ImmutableList.of(MimeTypes.AUDIO_AAC, MimeTypes.AUDIO_AMR_NB, MimeTypes.AUDIO_AMR_WB);
+  private static final String TAG = "FrameworkMuxer";
+
   private final MediaMuxer mediaMuxer;
   private final long videoDurationUs;
   private final Map<TrackToken, Long> trackTokenToLastPresentationTimeUs;