diff --git a/src/screen_capturer/macosx/screen_capturer_sck.cpp b/src/screen_capturer/macosx/screen_capturer_sck.cpp
index 4133428..e79bd34 100644
--- a/src/screen_capturer/macosx/screen_capturer_sck.cpp
+++ b/src/screen_capturer/macosx/screen_capturer_sck.cpp
@@ -29,9 +29,19 @@ int ScreenCapturerSck::Start() {
 
 int ScreenCapturerSck::Stop() { return 0; }
 
-int ScreenCapturerSck::Pause(int monitor_index) { return 0; }
+int ScreenCapturerSck::Pause(int monitor_index) {
+  if (screen_capturer_sck_impl_) {
+    return screen_capturer_sck_impl_->Pause(monitor_index);
+  }
+  return 0;
+}
 
-int ScreenCapturerSck::Resume(int monitor_index) { return 0; }
+int ScreenCapturerSck::Resume(int monitor_index) {
+  if (screen_capturer_sck_impl_) {
+    return screen_capturer_sck_impl_->Resume(monitor_index);
+  }
+  return 0;
+}
 
 int ScreenCapturerSck::SwitchTo(int monitor_index) {
   if (screen_capturer_sck_impl_) {
diff --git a/src/screen_capturer/macosx/screen_capturer_sck_impl.mm b/src/screen_capturer/macosx/screen_capturer_sck_impl.mm
index c770a2d..2b125cd 100644
--- a/src/screen_capturer/macosx/screen_capturer_sck_impl.mm
+++ b/src/screen_capturer/macosx/screen_capturer_sck_impl.mm
@@ -114,6 +114,11 @@ ScreenCapturerSckImpl::~ScreenCapturerSckImpl() {
   display_id_map_.clear();
   display_id_map_reverse_.clear();
 
+  if (nv12_frame_) {
+    delete[] nv12_frame_;
+    nv12_frame_ = nullptr;
+  }
+
   [stream_ stopCaptureWithCompletionHandler:nil];
   [helper_ releaseCapturer];
 }
@@ -281,15 +286,10 @@ void ScreenCapturerSckImpl::OnNewIOSurface(IOSurfaceRef io_surface, CFDictionary
   uint32_t aseed;
   IOSurfaceLock(io_surface, kIOSurfaceLockReadOnly, &aseed);
 
-  if (!nv12_frame_) {
-    nv12_frame_ = new unsigned char[width * height * 3 / 2];
-    width_ = width;
-    height_ = height;
-  }
-
-  if (nv12_frame_ && width_ * height_ < width * height) {
+  size_t required_size = width * height * 3 / 2;
+  if (!nv12_frame_ || (width_ * height_ * 3 / 2 < required_size)) {
     delete[] nv12_frame_;
-    nv12_frame_ = new unsigned char[width * height * 3 / 2];
+    nv12_frame_ = new unsigned char[required_size];
     width_ = width;
     height_ = height;
   }
diff --git a/thirdparty/projectx b/thirdparty/projectx
index 3a691e2..78804fc 160000
--- a/thirdparty/projectx
+++ b/thirdparty/projectx
@@ -1 +1 @@
-Subproject commit 3a691e266bb312ce188c4aa2bbe678834e274b00
+Subproject commit 78804fce8143907f0aa873c4b4481d6bbf229ee1