diff --git a/demos/transformer/src/main/java/androidx/media3/demo/transformer/TransformerActivity.java b/demos/transformer/src/main/java/androidx/media3/demo/transformer/TransformerActivity.java
index cadf4f14ec..604b39fc92 100644
--- a/demos/transformer/src/main/java/androidx/media3/demo/transformer/TransformerActivity.java
+++ b/demos/transformer/src/main/java/androidx/media3/demo/transformer/TransformerActivity.java
@@ -688,7 +688,10 @@ public final class TransformerActivity extends AppCompatActivity {
   private void onCompleted(Uri inputUri, String filePath) {
     exportStopwatch.stop();
     informationTextView.setText(
-        getString(R.string.export_completed, exportStopwatch.elapsed(TimeUnit.SECONDS), filePath));
+        getString(
+            R.string.export_completed,
+            exportStopwatch.elapsed(TimeUnit.MILLISECONDS) / 1000.f,
+            filePath));
     progressViewGroup.setVisibility(View.GONE);
     debugFrame.removeAllViews();
     inputCardView.setVisibility(View.VISIBLE);
diff --git a/demos/transformer/src/main/res/values/strings.xml b/demos/transformer/src/main/res/values/strings.xml
index 8a35e9d8a3..f1485e66c0 100644
--- a/demos/transformer/src/main/res/values/strings.xml
+++ b/demos/transformer/src/main/res/values/strings.xml
@@ -42,7 +42,7 @@
   <string name="debug_preview_not_available" translatable="false">No debug preview available.</string>
   <string name="export_started" translatable="false">Export started</string>
   <string name="export_timer" translatable="false">Export started %d seconds ago.</string>
-  <string name="export_completed" translatable="false">Export completed in %d seconds.\nOutput: %s</string>
+  <string name="export_completed" translatable="false">Export completed in %.3f seconds.\nOutput: %s</string>
   <string name="export_error" translatable="false">Export error</string>
   <string name="trim_range">Bounds in seconds</string>
   <string-array name="color_filter_options">