diff --git a/packages/video_player/video_player_platform_interface/CHANGELOG.md b/packages/video_player/video_player_platform_interface/CHANGELOG.md
index 0920582abad0..2af6f01ffe88 100644
--- a/packages/video_player/video_player_platform_interface/CHANGELOG.md
+++ b/packages/video_player/video_player_platform_interface/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.1.1
+
+* Fix mixWithOthers test channel.
+
 ## 2.1.0
 
 * Add VideoPlayerOptions with audo mix mode
diff --git a/packages/video_player/video_player_platform_interface/lib/messages.dart b/packages/video_player/video_player_platform_interface/lib/messages.dart
index a75ece0db850..c5e8cd413b70 100644
--- a/packages/video_player/video_player_platform_interface/lib/messages.dart
+++ b/packages/video_player/video_player_platform_interface/lib/messages.dart
@@ -134,6 +134,7 @@ abstract class VideoPlayerApiTest {
   PositionMessage position(TextureMessage arg);
   void seekTo(PositionMessage arg);
   void pause(TextureMessage arg);
+  void setMixWithOthers(MixWithOthersMessage arg);
 }
 
 void VideoPlayerApiTestSetup(VideoPlayerApiTest api) {
@@ -225,6 +226,18 @@ void VideoPlayerApiTestSetup(VideoPlayerApiTest api) {
       return {};
     });
   }
+  {
+    const BasicMessageChannel<dynamic> channel = BasicMessageChannel<dynamic>(
+        'dev.flutter.pigeon.VideoPlayerApi.setMixWithOthers',
+        StandardMessageCodec());
+    channel.setMockMessageHandler((dynamic message) async {
+      final Map<dynamic, dynamic> mapMessage = message as Map<dynamic, dynamic>;
+      final MixWithOthersMessage input =
+          MixWithOthersMessage._fromMap(mapMessage);
+      api.setMixWithOthers(input);
+      return {};
+    });
+  }
 }
 
 class VideoPlayerApi {
diff --git a/packages/video_player/video_player_platform_interface/pubspec.yaml b/packages/video_player/video_player_platform_interface/pubspec.yaml
index 4740605d7669..38bc6851f376 100644
--- a/packages/video_player/video_player_platform_interface/pubspec.yaml
+++ b/packages/video_player/video_player_platform_interface/pubspec.yaml
@@ -3,7 +3,7 @@ description: A common platform interface for the video_player plugin.
 homepage: https://github.com/flutter/plugins/tree/master/packages/video_player/video_player_platform_interface
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 2.1.0
+version: 2.1.1
 
 dependencies:
   flutter:
diff --git a/packages/video_player/video_player_platform_interface/test/method_channel_video_player_test.dart b/packages/video_player/video_player_platform_interface/test/method_channel_video_player_test.dart
index e7bcf26e9d26..185953163350 100644
--- a/packages/video_player/video_player_platform_interface/test/method_channel_video_player_test.dart
+++ b/packages/video_player/video_player_platform_interface/test/method_channel_video_player_test.dart
@@ -19,6 +19,7 @@ class _ApiLogger implements VideoPlayerApiTest {
   PositionMessage positionMessage;
   LoopingMessage loopingMessage;
   VolumeMessage volumeMessage;
+  MixWithOthersMessage mixWithOthersMessage;
 
   @override
   TextureMessage create(CreateMessage arg) {
@@ -50,6 +51,12 @@ class _ApiLogger implements VideoPlayerApiTest {
     textureMessage = arg;
   }
 
+  @override
+  void setMixWithOthers(MixWithOthersMessage arg) {
+    log.add('setMixWithOthers');
+    mixWithOthersMessage = arg;
+  }
+
   @override
   PositionMessage position(TextureMessage arg) {
     log.add('position');
@@ -179,6 +186,16 @@ void main() {
       expect(log.textureMessage.textureId, 1);
     });
 
+    test('setMixWithOthers', () async {
+      await player.setMixWithOthers(true);
+      expect(log.log.last, 'setMixWithOthers');
+      expect(log.mixWithOthersMessage.mixWithOthers, true);
+
+      await player.setMixWithOthers(false);
+      expect(log.log.last, 'setMixWithOthers');
+      expect(log.mixWithOthersMessage.mixWithOthers, false);
+    });
+
     test('setVolume', () async {
       await player.setVolume(1, 0.7);
       expect(log.log.last, 'setVolume');