diff --git a/Telegram/SourceFiles/calls/calls.style b/Telegram/SourceFiles/calls/calls.style
index 4750f37ce..7c539e141 100644
--- a/Telegram/SourceFiles/calls/calls.style
+++ b/Telegram/SourceFiles/calls/calls.style
@@ -1260,3 +1260,17 @@ groupCallTooltip: Tooltip(defaultTooltip) {
 	textFg: groupCallMembersFg;
 	textBorder: groupCallMembersBgOver;
 }
+groupCallNiceTooltip: ImportantTooltip(defaultImportantTooltip) {
+	bg: importantTooltipBg;
+	padding: margins(10px, 3px, 10px, 5px);
+	radius: 4px;
+	arrow: 4px;
+}
+groupCallNiceTooltipLabel: FlatLabel(defaultImportantTooltipLabel) {
+	style: TextStyle(defaultTextStyle) {
+		font: font(11px);
+		linkFont: font(11px);
+		linkFontOver: font(11px underline);
+	}
+}
+groupCallNiceTooltipTop: 4px;
diff --git a/Telegram/SourceFiles/calls/group/calls_group_call.cpp b/Telegram/SourceFiles/calls/group/calls_group_call.cpp
index 95d460623..6ebf8a3ba 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_call.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_call.cpp
@@ -500,7 +500,6 @@ rpl::producer<bool> GroupCall::canManageValue() const {
 void GroupCall::toggleVideo(bool active) {
 	if (!_instance
 		|| !_id
-		|| (active && mutedByAdmin())
 		|| (!active && !_cameraOutgoing)) {
 		return;
 	}
@@ -513,7 +512,6 @@ void GroupCall::toggleVideo(bool active) {
 void GroupCall::toggleScreenSharing(std::optional<QString> uniqueId) {
 	if (!_instance
 		|| !_id
-		|| (uniqueId && mutedByAdmin())
 		|| (!uniqueId && !_screenOutgoing)) {
 		return;
 	}
diff --git a/Telegram/SourceFiles/calls/group/calls_group_panel.cpp b/Telegram/SourceFiles/calls/group/calls_group_panel.cpp
index 44ac9d4ee..7ceede4fb 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_panel.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_panel.cpp
@@ -22,6 +22,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/widgets/checkbox.h"
 #include "ui/widgets/dropdown_menu.h"
 #include "ui/widgets/input_fields.h"
+#include "ui/widgets/tooltip.h"
 #include "ui/chat/group_call_bar.h"
 #include "ui/layers/layer_manager.h"
 #include "ui/layers/generic_box.h"
@@ -45,6 +46,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/peer_lists_box.h"
 #include "boxes/confirm_box.h"
 #include "base/unixtime.h"
+#include "base/qt_signal_producer.h"
 #include "base/timer_rpl.h"
 #include "app.h"
 #include "apiwrap.h" // api().kickParticipant.
@@ -1792,6 +1794,7 @@ bool Panel::updateMode() {
 		_call->pinVideoEndpoint({});
 	}
 	refreshVideoButtons(wide);
+	_niceTooltip.destroy();
 	_mode = mode;
 	if (_title) {
 		_title->setTextColorOverride(wide
@@ -1983,33 +1986,111 @@ void Panel::setupControlsBackgroundWide() {
 	trackControls(true);
 }
 
-template <typename WidgetPointer>
-void Panel::trackControl(WidgetPointer &widget, rpl::lifetime &lifetime) {
-	if (widget) {
-		const auto raw = &*widget;
-		raw->events(
-		) | rpl::start_with_next([=](not_null<QEvent*> e) {
-			using Type = std::remove_cvref_t<decltype(*raw)>;
-			constexpr auto mute = std::is_same_v<Type, Ui::CallMuteButton>;
-			if (e->type() == QEvent::Enter) {
-				auto &integration = Ui::Integration::Instance();
-				if constexpr (mute) {
-					integration.registerLeaveSubscription(raw->outer());
-				} else {
-					integration.registerLeaveSubscription(raw);
-				}
-				toggleWideControls(true);
-			} else if (e->type() == QEvent::Leave) {
-				auto &integration = Ui::Integration::Instance();
-				if constexpr (mute) {
-					integration.unregisterLeaveSubscription(raw->outer());
-				} else {
-					integration.unregisterLeaveSubscription(raw);
-				}
-				toggleWideControls(false);
-			}
-		}, lifetime);
+void Panel::trackControl(Ui::RpWidget *widget, rpl::lifetime &lifetime) {
+	if (!widget) {
+		return;
 	}
+	widget->events(
+	) | rpl::start_with_next([=](not_null<QEvent*> e) {
+		if (e->type() == QEvent::Enter) {
+			trackControlOver(widget, true);
+		} else if (e->type() == QEvent::Leave) {
+			trackControlOver(widget, false);
+		}
+	}, lifetime);
+}
+
+void Panel::trackControlOver(not_null<Ui::RpWidget*> control, bool over) {
+	if (_niceTooltip) {
+		_niceTooltip.release()->toggleAnimated(false);
+	}
+	if (over) {
+		Ui::Integration::Instance().registerLeaveSubscription(control);
+		showNiceTooltip(control);
+	} else {
+		Ui::Integration::Instance().unregisterLeaveSubscription(control);
+	}
+	toggleWideControls(over);
+}
+
+void Panel::showNiceTooltip(not_null<Ui::RpWidget*> control) {
+	auto text = [&]() -> rpl::producer<QString> {
+		if (control == _screenShare.data()) {
+			if (_call->mutedByAdmin()) {
+				return nullptr;
+			}
+			return tr::lng_group_call_tooltip_screen();
+		} else if (control == _video.data()) {
+			if (_call->mutedByAdmin()) {
+				return nullptr;
+			}
+			return _call->isSharingCameraValue(
+			) | rpl::map([=](bool sharing) {
+				return sharing
+					? tr::lng_group_call_tooltip_camera_off()
+					: tr::lng_group_call_tooltip_camera();
+			}) | rpl::flatten_latest();
+		} else if (control == _settings.data()) {
+			return tr::lng_group_call_settings();
+		} else if (control == _mute->outer()) {
+			return MuteButtonTooltip(_call);
+		} else if (control == _hangup.data()) {
+			return tr::lng_group_call_leave();
+		}
+		return rpl::producer<QString>();
+	}();
+	if (!text
+		|| _wideControlsAnimation.animating()
+		|| !_wideControlsShown) {
+		return;
+	}
+	_niceTooltip.create(
+		widget().get(),
+		object_ptr<Ui::FlatLabel>(
+			widget().get(),
+			std::move(text),
+			st::groupCallNiceTooltipLabel),
+		st::groupCallNiceTooltip);
+	const auto tooltip = _niceTooltip.data();
+	const auto weak = QPointer<QWidget>(tooltip);
+	const auto destroy = [=] {
+		delete weak.data();
+	};
+	tooltip->setAttribute(Qt::WA_TransparentForMouseEvents);
+	tooltip->setHiddenCallback(destroy);
+	base::qt_signal_producer(
+		control.get(),
+		&QObject::destroyed
+	) | rpl::start_with_next(destroy, tooltip->lifetime());
+
+	const auto geometry = control->geometry();
+	const auto countPosition = [=](QSize size) {
+		const auto strong = weak.data();
+		if (!strong) {
+			return QPoint();
+		}
+		const auto top = geometry.y()
+			- st::groupCallNiceTooltipTop
+			- size.height();
+		const auto middle = geometry.center().x();
+		const auto back = _controlsBackgroundWide.data();
+		if (size.width() >= _viewport->widget()->width()) {
+			return QPoint(_viewport->widget()->x(), top);
+		} else if (back && size.width() >= back->width()) {
+			return QPoint(
+				back->x() - (size.width() - back->width()) / 2,
+				top);
+		} else if (back && (middle - back->x() < size.width() / 2)) {
+			return QPoint(back->x(), top);
+		} else if (back
+			&& (back->x() + back->width() - middle < size.width() / 2)) {
+			return QPoint(back->x() + back->width() - size.width(), top);
+		} else {
+			return QPoint(middle - size.width() / 2, top);
+		}
+	};
+	tooltip->pointAt(geometry, RectPart::Top, countPosition);
+	tooltip->toggleAnimated(true);
 }
 
 void Panel::trackControls(bool track) {
@@ -2032,7 +2113,7 @@ void Panel::trackControls(bool track) {
 	const auto trackOne = [=](auto &&widget) {
 		trackControl(widget, _trackControlsOverStateLifetime);
 	};
-	trackOne(_mute);
+	trackOne(_mute->outer());
 	trackOne(_video);
 	trackOne(_screenShare);
 	trackOne(_wideMenu);
@@ -2106,13 +2187,13 @@ void Panel::updateButtonsGeometry() {
 		const auto skip = st::groupCallButtonSkipSmall;
 		const auto fullWidth = (_video->width() + skip)
 			+ (_screenShare->width() + skip)
-			+ muteSize
+			+ (muteSize + skip)
 			+ (_settings ->width() + skip)
-			+ _hangup->width() + skip;
+			+ _hangup->width();
 		const auto membersSkip = st::groupCallNarrowSkip;
 		const auto membersWidth = st::groupCallNarrowMembersWidth
 			+ 2 * membersSkip;
-		auto left = (widget()->width()
+		auto left = membersSkip + (widget()->width()
 			- membersWidth
 			- membersSkip
 			- fullWidth) / 2;
diff --git a/Telegram/SourceFiles/calls/group/calls_group_panel.h b/Telegram/SourceFiles/calls/group/calls_group_panel.h
index 500286122..27b0606a3 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_panel.h
+++ b/Telegram/SourceFiles/calls/group/calls_group_panel.h
@@ -26,6 +26,7 @@ class GroupCall;
 
 namespace Ui {
 class AbstractButton;
+class ImportantTooltip;
 class DropdownMenu;
 class CallButton;
 class CallMuteButton;
@@ -102,8 +103,9 @@ private:
 	void enlargeVideo();
 	void minimizeVideo();
 
-	template <typename WidgetPointer>
-	void trackControl(WidgetPointer &widget, rpl::lifetime &lifetime);
+	void trackControl(Ui::RpWidget *widget, rpl::lifetime &lifetime);
+	void trackControlOver(not_null<Ui::RpWidget*> control, bool over);
+	void showNiceTooltip(not_null<Ui::RpWidget*> control);
 
 	bool updateMode();
 	void updateControlsGeometry();
@@ -191,6 +193,7 @@ private:
 	object_ptr<Ui::CallButton> _screenShare = { nullptr };
 	std::unique_ptr<Ui::CallMuteButton> _mute;
 	object_ptr<Ui::CallButton> _hangup;
+	object_ptr<Ui::ImportantTooltip> _niceTooltip = { nullptr };
 	Fn<void()> _callShareLinkCallback;
 
 	rpl::lifetime _peerLifetime;
diff --git a/Telegram/SourceFiles/calls/group/calls_group_viewport.cpp b/Telegram/SourceFiles/calls/group/calls_group_viewport.cpp
index 54dc70d86..5717e6433 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_viewport.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_viewport.cpp
@@ -21,6 +21,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/gl/gl_surface.h"
 #include "ui/effects/animations.h"
 #include "ui/effects/cross_line.h"
+#include "data/data_group_call.h" // MuteButtonTooltip.
 #include "lang/lang_keys.h"
 #include "styles/style_calls.h"
 
@@ -603,4 +604,51 @@ QImage GenerateShadow(
 	return result;
 }
 
+rpl::producer<QString> MuteButtonTooltip(not_null<GroupCall*> call) {
+	//return rpl::single(std::make_tuple(
+	//	(Data::GroupCall*)nullptr,
+	//	call->scheduleDate()
+	//)) | rpl::then(call->real(
+	//) | rpl::map([](not_null<Data::GroupCall*> real) {
+	//	using namespace rpl::mappers;
+	//	return real->scheduleDateValue(
+	//	) | rpl::map([=](TimeId scheduleDate) {
+	//		return std::make_tuple(real.get(), scheduleDate);
+	//	});
+	//}) | rpl::flatten_latest(
+	//)) | rpl::map([=](
+	//		Data::GroupCall *real,
+	//		TimeId scheduleDate) -> rpl::producer<QString> {
+	//	if (scheduleDate) {
+	//		return rpl::combine(
+	//			call->canManageValue(),
+	//			(real
+	//				? real->scheduleStartSubscribedValue()
+	//				: rpl::single(false))
+	//		) | rpl::map([](bool canManage, bool subscribed) {
+	//			return canManage
+	//				? tr::lng_group_call_start_now()
+	//				: subscribed
+	//				? tr::lng_group_call_cancel_reminder()
+	//				: tr::lng_group_call_set_reminder();
+	//		}) | rpl::flatten_latest();
+	//	}
+		return call->mutedValue(
+		) | rpl::map([](MuteState muted) {
+			switch (muted) {
+			case MuteState::Active:
+			case MuteState::PushToTalk:
+				return tr::lng_group_call_you_are_live();
+			case MuteState::ForceMuted:
+				return tr::lng_group_call_tooltip_force_muted();
+			case MuteState::RaisedHand:
+				return tr::lng_group_call_tooltip_raised_hand();
+			case MuteState::Muted:
+				return tr::lng_group_call_tooltip_microphone();
+			}
+			Unexpected("Value in MuteState in showNiceTooltip.");
+		}) | rpl::flatten_latest();
+	//}) | rpl::flatten_latest();
+}
+
 } // namespace Calls::Group
diff --git a/Telegram/SourceFiles/calls/group/calls_group_viewport.h b/Telegram/SourceFiles/calls/group/calls_group_viewport.h
index 1c021c1cd..a2dfb7fbf 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_viewport.h
+++ b/Telegram/SourceFiles/calls/group/calls_group_viewport.h
@@ -23,6 +23,7 @@ struct ChosenRenderer;
 } // namespace Ui
 
 namespace Calls {
+class GroupCall;
 struct VideoEndpoint;
 struct VideoPinToggle;
 struct VideoQualityRequest;
@@ -158,4 +159,7 @@ private:
 	int bottomAlpha,
 	QColor color = QColor(0, 0, 0));
 
+[[nodiscard]] rpl::producer<QString> MuteButtonTooltip(
+	not_null<GroupCall*> call);
+
 } // namespace Calls::Group
diff --git a/Telegram/SourceFiles/ui/controls/call_mute_button.cpp b/Telegram/SourceFiles/ui/controls/call_mute_button.cpp
index 51e4747b6..8d6f62e28 100644
--- a/Telegram/SourceFiles/ui/controls/call_mute_button.cpp
+++ b/Telegram/SourceFiles/ui/controls/call_mute_button.cpp
@@ -1068,10 +1068,6 @@ rpl::producer<Qt::MouseButton> CallMuteButton::clicks() {
 	});
 }
 
-rpl::producer<not_null<QEvent*>> CallMuteButton::events() const {
-	return _content->events();
-}
-
 QSize CallMuteButton::innerSize() const {
 	return innerGeometry().size();
 }
@@ -1169,7 +1165,7 @@ rpl::producer<CallButtonColors> CallMuteButton::colorOverrides() const {
 	return _colorOverrides.events();
 }
 
-not_null<QWidget*> CallMuteButton::outer() const {
+not_null<RpWidget*> CallMuteButton::outer() const {
 	return _content.get();
 }
 
diff --git a/Telegram/SourceFiles/ui/controls/call_mute_button.h b/Telegram/SourceFiles/ui/controls/call_mute_button.h
index 109cb2c28..828c44db7 100644
--- a/Telegram/SourceFiles/ui/controls/call_mute_button.h
+++ b/Telegram/SourceFiles/ui/controls/call_mute_button.h
@@ -64,7 +64,6 @@ public:
 	void setStyle(const style::CallMuteButton &st);
 	void setLevel(float level);
 	[[nodiscard]] rpl::producer<Qt::MouseButton> clicks();
-	[[nodiscard]] rpl::producer<not_null<QEvent*>> events() const;
 
 	[[nodiscard]] QSize innerSize() const;
 	[[nodiscard]] QRect innerGeometry() const;
@@ -83,7 +82,7 @@ public:
 	void raise();
 	void lower();
 
-	[[nodiscard]] not_null<QWidget*> outer() const;
+	[[nodiscard]] not_null<RpWidget*> outer() const;
 	[[nodiscard]] rpl::producer<CallButtonColors> colorOverrides() const;
 
 	[[nodiscard]] rpl::lifetime &lifetime();
diff --git a/Telegram/ThirdParty/tgcalls b/Telegram/ThirdParty/tgcalls
index 11cd08b14..19543aaf4 160000
--- a/Telegram/ThirdParty/tgcalls
+++ b/Telegram/ThirdParty/tgcalls
@@ -1 +1 @@
-Subproject commit 11cd08b14206a2ce3669cebafb6e693a30ef14ab
+Subproject commit 19543aaf43d97e254f9b379cc3bc77491009f9d4
diff --git a/Telegram/cmake/lib_tgcalls.cmake b/Telegram/cmake/lib_tgcalls.cmake
index c84317f67..d27f98c4f 100644
--- a/Telegram/cmake/lib_tgcalls.cmake
+++ b/Telegram/cmake/lib_tgcalls.cmake
@@ -91,6 +91,8 @@ PRIVATE
     # iOS / macOS
     platform/darwin/DarwinInterface.h
     platform/darwin/DarwinInterface.mm
+    platform/darwin/DarwinVideoSource.h
+    platform/darwin/DarwinVideoSource.mm
     platform/darwin/DesktopCaptureSourceView.h
     platform/darwin/DesktopCaptureSourceView.mm
     platform/darwin/DesktopSharingCapturer.h
diff --git a/Telegram/lib_ui b/Telegram/lib_ui
index 8fbeb7f50..f475fe28e 160000
--- a/Telegram/lib_ui
+++ b/Telegram/lib_ui
@@ -1 +1 @@
-Subproject commit 8fbeb7f5032e588dfd134c9fe80e1880f888f12f
+Subproject commit f475fe28e47af4408bc96ba63e63f599c02538ca