diff --git a/modules/desktop_capture/desktop_frame.cc b/modules/desktop_capture/desktop_frame.cc
index d6f574588c..030bd8f060 100644
--- a/modules/desktop_capture/desktop_frame.cc
+++ b/modules/desktop_capture/desktop_frame.cc
@@ -144,6 +144,23 @@ void DesktopFrame::MoveFrameInfoFrom(DesktopFrame* other) {
   set_icc_profile(other->icc_profile());
 }
 
+bool DesktopFrame::FrameDataIsBlack() const {
+  if (size().is_empty())
+    return false;
+
+  uint32_t* pixel = reinterpret_cast<uint32_t*>(data());
+  for (int i = 0; i < size().width() * size().height(); ++i) {
+    if (*pixel++)
+      return false;
+  }
+  return true;
+}
+
+void DesktopFrame::SetFrameDataToBlack() {
+  const uint8_t kBlackPixelValue = 0x00;
+  memset(data(), kBlackPixelValue, stride() * size().height());
+}
+
 BasicDesktopFrame::BasicDesktopFrame(DesktopSize size)
     : DesktopFrame(size,
                    kBytesPerPixel * size.width(),
diff --git a/modules/desktop_capture/desktop_frame.h b/modules/desktop_capture/desktop_frame.h
index 3ee1867e70..35ac8e2475 100644
--- a/modules/desktop_capture/desktop_frame.h
+++ b/modules/desktop_capture/desktop_frame.h
@@ -142,6 +142,13 @@ class RTC_EXPORT DesktopFrame {
     icc_profile_ = icc_profile;
   }
 
+  // Sets all pixel values in the data buffer to zero.
+  void SetFrameDataToBlack();
+
+  // Returns true if all pixel values in the data buffer are zero or false
+  // otherwise. Also returns false if the frame is empty.
+  bool FrameDataIsBlack() const;
+
  protected:
   DesktopFrame(DesktopSize size,
                int stride,
diff --git a/modules/desktop_capture/desktop_frame_unittest.cc b/modules/desktop_capture/desktop_frame_unittest.cc
index ce0cbb45f5..22df1a7f53 100644
--- a/modules/desktop_capture/desktop_frame_unittest.cc
+++ b/modules/desktop_capture/desktop_frame_unittest.cc
@@ -87,6 +87,23 @@ void RunTests(const TestData* tests, int num_tests) {
 
 }  // namespace
 
+TEST(DesktopFrameTest, NewFrameIsBlack) {
+  auto frame = std::make_unique<BasicDesktopFrame>(DesktopSize(10, 10));
+  EXPECT_TRUE(frame->FrameDataIsBlack());
+}
+
+TEST(DesktopFrameTest, EmptyFrameIsNotBlack) {
+  auto frame = std::make_unique<BasicDesktopFrame>(DesktopSize());
+  EXPECT_FALSE(frame->FrameDataIsBlack());
+}
+
+TEST(DesktopFrameTest, FrameDataSwitchesBetweenNonBlackAndBlack) {
+  auto frame = CreateTestFrame(DesktopRect::MakeXYWH(0, 0, 10, 10), 0xff);
+  EXPECT_FALSE(frame->FrameDataIsBlack());
+  frame->SetFrameDataToBlack();
+  EXPECT_TRUE(frame->FrameDataIsBlack());
+}
+
 TEST(DesktopFrameTest, CopyIntersectingPixelsMatchingRects) {
   const TestData tests[] = {
     {"0 origin",