diff --git a/submodules/TelegramVoip/Sources/OngoingCallContext.swift b/submodules/TelegramVoip/Sources/OngoingCallContext.swift
index 9e77b2e613..111e3dea81 100644
--- a/submodules/TelegramVoip/Sources/OngoingCallContext.swift
+++ b/submodules/TelegramVoip/Sources/OngoingCallContext.swift
@@ -435,10 +435,6 @@ public final class OngoingCallVideoCapturer {
         self.impl.setIsVideoEnabled(value)
     }
 
-    public func injectSampleBuffer(_ sampleBuffer: CMSampleBuffer) {
-        self.impl.submitSampleBuffer(sampleBuffer)
-    }
-
     public func injectPixelBuffer(_ pixelBuffer: CVPixelBuffer, rotation: CGImagePropertyOrientation) {
         var videoRotation: OngoingCallVideoOrientation = .rotation0
         switch rotation {
diff --git a/submodules/TgVoipWebrtc/BUILD b/submodules/TgVoipWebrtc/BUILD
index 8b6631cfa8..e7da0a33c9 100644
--- a/submodules/TgVoipWebrtc/BUILD
+++ b/submodules/TgVoipWebrtc/BUILD
@@ -26,6 +26,9 @@ objc_library(
         "tgcalls/tgcalls/platform/darwin/DesktopSharingCapturer.*",
         "tgcalls/tgcalls/platform/darwin/DesktopCaptureSourceViewMac.*",
         "tgcalls/tgcalls/platform/darwin/DesktopCaptureSourceView.*",
+        "tgcalls/tgcalls/platform/darwin/TGCMIODevice.*",
+        "tgcalls/tgcalls/platform/darwin/TGCMIOCapturer.*",
+        "tgcalls/tgcalls/platform/darwin/VideoCMIOCapture.*",
         "tgcalls/tgcalls/desktop_capturer/**",
     ]),
     hdrs = glob([
diff --git a/submodules/TgVoipWebrtc/PublicHeaders/TgVoipWebrtc/OngoingCallThreadLocalContext.h b/submodules/TgVoipWebrtc/PublicHeaders/TgVoipWebrtc/OngoingCallThreadLocalContext.h
index 6e8ca83fb0..13dece37ac 100644
--- a/submodules/TgVoipWebrtc/PublicHeaders/TgVoipWebrtc/OngoingCallThreadLocalContext.h
+++ b/submodules/TgVoipWebrtc/PublicHeaders/TgVoipWebrtc/OngoingCallThreadLocalContext.h
@@ -126,7 +126,6 @@ typedef NS_ENUM(int32_t, OngoingCallDataSavingWebrtc) {
 - (void)setOnIsActiveUpdated:(void (^_Nonnull)(bool))onIsActiveUpdated;
 
 #if TARGET_OS_IOS
-- (void)submitSampleBuffer:(CMSampleBufferRef _Nonnull)sampleBuffer;
 - (void)submitPixelBuffer:(CVPixelBufferRef _Nonnull)pixelBuffer rotation:(OngoingCallVideoOrientationWebrtc)rotation;
 #endif
 
diff --git a/submodules/TgVoipWebrtc/Sources/OngoingCallThreadLocalContext.mm b/submodules/TgVoipWebrtc/Sources/OngoingCallThreadLocalContext.mm
index 7f76974a47..3d8c43610e 100644
--- a/submodules/TgVoipWebrtc/Sources/OngoingCallThreadLocalContext.mm
+++ b/submodules/TgVoipWebrtc/Sources/OngoingCallThreadLocalContext.mm
@@ -50,8 +50,26 @@
 
 @end
 
+@interface IsProcessingCustomSampleBufferFlag : NSObject
+
+@property (nonatomic) bool value;
+
+@end
+
+@implementation IsProcessingCustomSampleBufferFlag
+
+- (instancetype)init {
+    self = [super init];
+    if (self != nil) {
+    }
+    return self;
+}
+
+@end
+
 @interface OngoingCallThreadLocalContextVideoCapturer () {
     std::shared_ptr<tgcalls::VideoCaptureInterface> _interface;
+    IsProcessingCustomSampleBufferFlag *_isProcessingCustomSampleBuffer;
 }
 
 @end
@@ -217,6 +235,7 @@
     self = [super init];
     if (self != nil) {
         _interface = interface;
+        _isProcessingCustomSampleBuffer = [[IsProcessingCustomSampleBufferFlag alloc] init];
         _croppingBuffer = std::make_shared<std::vector<uint8_t>>();
     }
     return self;
@@ -254,20 +273,6 @@ tgcalls::VideoCaptureInterfaceObject *GetVideoCaptureAssumingSameThread(tgcalls:
 }
 
 #if TARGET_OS_IOS
-- (void)submitSampleBuffer:(CMSampleBufferRef _Nonnull)sampleBuffer {
-    if (!sampleBuffer) {
-        return;
-    }
-    tgcalls::StaticThreads::getThreads()->getMediaThread()->PostTask(RTC_FROM_HERE, [interface = _interface, sampleBuffer = CFRetain(sampleBuffer)]() {
-        auto capture = GetVideoCaptureAssumingSameThread(interface.get());
-        auto source = capture->source();
-        if (source) {
-            [CustomExternalCapturer passSampleBuffer:(CMSampleBufferRef)sampleBuffer toSource:source];
-        }
-        CFRelease(sampleBuffer);
-    });
-}
-
 - (void)submitPixelBuffer:(CVPixelBufferRef _Nonnull)pixelBuffer rotation:(OngoingCallVideoOrientationWebrtc)rotation {
     if (!pixelBuffer) {
         return;
@@ -289,13 +294,19 @@ tgcalls::VideoCaptureInterfaceObject *GetVideoCaptureAssumingSameThread(tgcalls:
         break;
     }
 
-    tgcalls::StaticThreads::getThreads()->getMediaThread()->PostTask(RTC_FROM_HERE, [interface = _interface, pixelBuffer = CFRetain(pixelBuffer), croppingBuffer = _croppingBuffer, videoRotation = videoRotation]() {
+    if (_isProcessingCustomSampleBuffer.value) {
+        return;
+    }
+    _isProcessingCustomSampleBuffer.value = true;
+
+    tgcalls::StaticThreads::getThreads()->getMediaThread()->PostTask(RTC_FROM_HERE, [interface = _interface, pixelBuffer = CFRetain(pixelBuffer), croppingBuffer = _croppingBuffer, videoRotation = videoRotation, isProcessingCustomSampleBuffer = _isProcessingCustomSampleBuffer]() {
         auto capture = GetVideoCaptureAssumingSameThread(interface.get());
         auto source = capture->source();
         if (source) {
             [CustomExternalCapturer passPixelBuffer:(CVPixelBufferRef)pixelBuffer rotation:videoRotation toSource:source croppingBuffer:*croppingBuffer];
         }
         CFRelease(pixelBuffer);
+        isProcessingCustomSampleBuffer.value = false;
     });
 }
 
diff --git a/submodules/TgVoipWebrtc/tgcalls b/submodules/TgVoipWebrtc/tgcalls
index 91b711e620..51a2c86469 160000
--- a/submodules/TgVoipWebrtc/tgcalls
+++ b/submodules/TgVoipWebrtc/tgcalls
@@ -1 +1 @@
-Subproject commit 91b711e620f7043113a40496f9dddc0ccea16d52
+Subproject commit 51a2c86469971c98f516579b509d56b856981e56