diff --git a/mediapipe/tasks/ios/vision/object_detector/sources/MPPObjectDetector.h b/mediapipe/tasks/ios/vision/object_detector/sources/MPPObjectDetector.h
index 4ac8cc773..82404849b 100644
--- a/mediapipe/tasks/ios/vision/object_detector/sources/MPPObjectDetector.h
+++ b/mediapipe/tasks/ios/vision/object_detector/sources/MPPObjectDetector.h
@@ -95,6 +95,15 @@ NS_SWIFT_NAME(ObjectDetector)
  * interest. Rotation will be applied according to the `orientation` property of the provided
  * `MPPImage`. Only use this method when the `MPPObjectDetector` is created with
  * `MPPRunningModeImage`.
+ * 
+ * This method supports classification of RGBA images. If your `MPPImage` has a source type of
+ * `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
+ * must have one of the following pixel format types:
+ * 1. kCVPixelFormatType_32BGRA
+ * 2. kCVPixelFormatType_32RGBA
+ *
+ * If your `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color space is
+ * RGB with an Alpha channel.
  *
  * @param image The `MPPImage` on which object detection is to be performed.
  * @param error An optional error parameter populated when there is an error in performing object
@@ -114,6 +123,15 @@ NS_SWIFT_NAME(ObjectDetector)
  * image as region of interest. Rotation will be applied according to the `orientation` property of
  * the provided `MPPImage`. Only use this method when the `MPPObjectDetector` is created with
  * `MPPRunningModeVideo`.
+ * 
+ * This method supports classification of RGBA images. If your `MPPImage` has a source type of
+ * `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
+ * must have one of the following pixel format types:
+ * 1. kCVPixelFormatType_32BGRA
+ * 2. kCVPixelFormatType_32RGBA
+ *
+ * If your `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color space is
+ * RGB with an Alpha channel.
  *
  * @param image The `MPPImage` on which object detection is to be performed.
  * @param timestampInMilliseconds The video frame's timestamp (in milliseconds). The input
@@ -136,6 +154,7 @@ NS_SWIFT_NAME(ObjectDetector)
  * image as region of interest. Rotation will be applied according to the `orientation` property of
  * the provided `MPPImage`. Only use this method when the `MPPObjectDetector` is created with
  * `MPPRunningModeLiveStream`. 
+ * 
  * The object which needs to be continuously notified of the available results of object
  * detection must confirm to `MPPObjectDetectorLiveStreamDelegate` protocol and implement the
  * `objectDetector:didFinishDetectionWithResult:timestampInMilliseconds:error:` delegate method.
@@ -143,6 +162,19 @@ NS_SWIFT_NAME(ObjectDetector)
  * It's required to provide a timestamp (in milliseconds) to indicate when the input image is sent
  * to the object detector. The input timestamps must be monotonically increasing.
  *
+ * This method supports classification of RGBA images. If your `MPPImage` has a source type of
+ * `MPPImageSourceTypePixelBuffer` or `MPPImageSourceTypeSampleBuffer`, the underlying pixel buffer
+ * must have one of the following pixel format types:
+ * 1. kCVPixelFormatType_32BGRA
+ * 2. kCVPixelFormatType_32RGBA
+ *
+ * If the input `MPPImage` has a source type of `MPPImageSourceTypeImage` ensure that the color
+ * space is RGB with an Alpha channel.
+ *
+ * If this method is used for classifying live camera frames using `AVFoundation`, ensure that you
+ * request `AVCaptureVideoDataOutput` to output frames in `kCMPixelFormat_32RGBA` using its
+ * `videoSettings` property.
+ * 
  * @param image A live stream image data of type `MPPImage` on which object detection is to be
  * performed.
  * @param timestampInMilliseconds The timestamp (in milliseconds) which indicates when the input