diff --git a/en-US/dita/RTC-NG/API/class_externalvideoframe.dita b/en-US/dita/RTC-NG/API/class_externalvideoframe.dita
index 2ff2563eb68..9794047f03d 100644
--- a/en-US/dita/RTC-NG/API/class_externalvideoframe.dita
+++ b/en-US/dita/RTC-NG/API/class_externalvideoframe.dita
@@ -50,49 +50,54 @@
 @property(assign, nonatomic) int rotation;
 @end</codeblock>
             <codeblock props="cpp unreal bp" outputclass="language-cpp">struct ExternalVideoFrame {
-                    ExternalVideoFrame()
-                    : type(VIDEO_BUFFER_RAW_DATA),
-                    format(VIDEO_PIXEL_DEFAULT),
-                    buffer(NULL),
-                    stride(0),
-                    height(0),
-                    cropLeft(0),
-                    cropTop(0),
-                    cropRight(0),
-                    cropBottom(0),
-                    rotation(0),
-                    timestamp(0),
-                    eglContext(NULL),
-                    eglType(EGL_CONTEXT10),
-                    textureId(0),
-                    metadata_buffer(NULL),
-                    metadata_size(0){}
-                    enum EGL_CONTEXT_TYPE {
-                    EGL_CONTEXT10 = 0,
-                    EGL_CONTEXT14 = 1,
-                    };
-                    enum VIDEO_BUFFER_TYPE {
-                    VIDEO_BUFFER_RAW_DATA = 1,
-                    VIDEO_BUFFER_ARRAY = 2,
-                    VIDEO_BUFFER_TEXTURE = 3,
-                    };
-                    VIDEO_BUFFER_TYPE type;
-                    VIDEO_PIXEL_FORMAT format;
-                    void* buffer;
-                    int stride;
-                    int height;
-                    int cropLeft;
-                    int cropTop;
-                    int cropRight;
-                    int cropBottom;
-                    int rotation;
-                    long long timestamp;
-                    void *eglContext;
-                    EGL_CONTEXT_TYPE eglType;
-                    int textureId;
-                    uint8_t* metadata_buffer;
-                    int metadata_size;
-                    };</codeblock>
+  ExternalVideoFrame()
+      : type(VIDEO_BUFFER_RAW_DATA),
+        format(VIDEO_PIXEL_DEFAULT),
+        buffer(NULL),
+        stride(0),
+        height(0),
+        cropLeft(0),
+        cropTop(0),
+        cropRight(0),
+        cropBottom(0),
+        rotation(0),
+        timestamp(0),
+        eglContext(NULL),
+        eglType(EGL_CONTEXT10),
+        textureId(0),
+        metadata_buffer(NULL),
+        metadata_size(0),
+        d3d11_texture_2d(NULL),
+        texture_slice_index(0){}
+  enum EGL_CONTEXT_TYPE {
+    EGL_CONTEXT10 = 0,
+    EGL_CONTEXT14 = 1,
+  };
+  enum VIDEO_BUFFER_TYPE {
+    VIDEO_BUFFER_RAW_DATA = 1,
+    VIDEO_BUFFER_ARRAY = 2,
+    VIDEO_BUFFER_TEXTURE = 3,
+  };
+  VIDEO_BUFFER_TYPE type;
+  VIDEO_PIXEL_FORMAT format;
+  void* buffer;
+  int stride;
+  int height;
+  int cropLeft;
+  int cropTop;
+  int cropRight;
+  int cropBottom;
+  int rotation;
+  long long timestamp;
+  void *eglContext;
+  EGL_CONTEXT_TYPE eglType;
+  int textureId;
+  float matrix[16];
+  uint8_t* metadata_buffer;
+  int metadata_size;
+  void *d3d11_texture_2d;
+  int texture_slice_index;
+};</codeblock>
             <codeblock props="electron" outputclass="language-typescript">export class ExternalVideoFrame {
   type?: VideoBufferType;
   format?: VideoPixelFormat;
@@ -190,8 +195,8 @@
   metadata_buffer?: Uint8Array;
   metadata_size?: number;
 }</codeblock>
-            <codeblock props="flutter" outputclass="language-dart">class ExternalVideoFrame {
-
+            <codeblock props="flutter" outputclass="language-dart">@JsonSerializable(explicitToJson: true, includeIfNull: false)
+class ExternalVideoFrame {
   const ExternalVideoFrame(
       {this.type,
       this.format,
@@ -208,7 +213,9 @@
       this.textureId,
       this.matrix,
       this.metadataBuffer,
-      this.metadataSize});
+      this.metadataSize,
+      this.alphaBuffer,
+      this.textureSliceIndex});
 
   @JsonKey(name: 'type')
   final VideoBufferType? type;
@@ -258,6 +265,12 @@
   @JsonKey(name: 'metadata_size')
   final int? metadataSize;
 
+  @JsonKey(name: 'alphaBuffer', ignore: true)
+  final Uint8List? alphaBuffer;
+
+  @JsonKey(name: 'texture_slice_index')
+  final int? textureSliceIndex;
+
   factory ExternalVideoFrame.fromJson(Map&lt;String, dynamic&gt; json) =&gt;
       _$ExternalVideoFrameFromJson(json);