diff --git a/Telegram/SourceFiles/calls/calls_call.cpp b/Telegram/SourceFiles/calls/calls_call.cpp
index fde79072e..84acf4fe5 100644
--- a/Telegram/SourceFiles/calls/calls_call.cpp
+++ b/Telegram/SourceFiles/calls/calls_call.cpp
@@ -17,6 +17,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "calls/calls_instance.h"
 #include "base/openssl_help.h"
 #include "base/random.h"
+#include "base/power_save_blocker.h"
 #include "mtproto/mtproto_dh_utils.h"
 #include "mtproto/mtproto_config.h"
 #include "core/application.h"
@@ -162,13 +163,17 @@ Call::Call(
 , _user(user)
 , _api(&_user->session().mtp())
 , _type(type)
+, _discardByTimeoutTimer([=] { hangup(); })
+, _powerSaveBlocker(std::make_unique<base::PowerSaveBlocker>(
+	base::PowerSaveBlockType::PreventDisplaySleep,
+	u"Video call is active"_q))
 , _videoIncoming(
 	std::make_unique<Webrtc::VideoTrack>(
 		StartVideoState(video)))
 , _videoOutgoing(
 	std::make_unique<Webrtc::VideoTrack>(
 		StartVideoState(video))) {
-	_discardByTimeoutTimer.setCallback([=] { hangup(); });
+	;
 
 	if (_type == Type::Outgoing) {
 		setState(State::Requesting);
@@ -1009,6 +1014,7 @@ void Call::setState(State state) {
 			|| state == State::Busy) {
 			// Destroy controller before destroying Call Panel,
 			// so that the panel hide animation is smooth.
+			_powerSaveBlocker = nullptr;
 			destroyController();
 		}
 		switch (state) {
diff --git a/Telegram/SourceFiles/calls/calls_call.h b/Telegram/SourceFiles/calls/calls_call.h
index ffc503d1f..750c75be5 100644
--- a/Telegram/SourceFiles/calls/calls_call.h
+++ b/Telegram/SourceFiles/calls/calls_call.h
@@ -13,6 +13,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "mtproto/sender.h"
 #include "mtproto/mtproto_auth_key.h"
 
+namespace base {
+class PowerSaveBlocker;
+} // namespace base
+
 namespace Media {
 namespace Audio {
 class Track;
@@ -269,6 +273,8 @@ private:
 	base::DelayedCallTimer _finishByTimeoutTimer;
 	base::Timer _discardByTimeoutTimer;
 
+	std::unique_ptr<base::PowerSaveBlocker> _powerSaveBlocker;
+
 	rpl::variable<bool> _muted = false;
 
 	DhConfig _dhConfig;
diff --git a/Telegram/SourceFiles/calls/group/calls_group_call.cpp b/Telegram/SourceFiles/calls/group/calls_group_call.cpp
index 2fd9fa8e7..39f551a16 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_call.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_call.cpp
@@ -27,6 +27,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_peer_values.h"
 #include "data/data_session.h"
 #include "base/global_shortcuts.h"
+#include "base/power_save_blocker.h"
 #include "base/random.h"
 #include "webrtc/webrtc_video_track.h"
 #include "webrtc/webrtc_media_devices.h"
@@ -567,6 +568,9 @@ GroupCall::GroupCall(
 , _peer(info.peer)
 , _history(_peer->owner().history(_peer))
 , _api(&_peer->session().mtp())
+, _powerSaveBlocker(std::make_unique<base::PowerSaveBlocker>(
+	base::PowerSaveBlockType::PreventDisplaySleep,
+	u"Video chat is active"_q))
 , _joinAs(info.joinAs)
 , _possibleJoinAs(std::move(info.possibleJoinAs))
 , _joinHash(info.joinHash)
diff --git a/Telegram/SourceFiles/calls/group/calls_group_call.h b/Telegram/SourceFiles/calls/group/calls_group_call.h
index a3fdf9039..0776ee5cc 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_call.h
+++ b/Telegram/SourceFiles/calls/group/calls_group_call.h
@@ -26,6 +26,7 @@ class VideoCaptureInterface;
 namespace base {
 class GlobalShortcutManager;
 class GlobalShortcutValue;
+class PowerSaveBlocker;
 } // namespace base
 
 namespace Webrtc {
@@ -564,6 +565,8 @@ private:
 	bool _recordingStoppedByMe = false;
 	bool _requestedVideoChannelsUpdateScheduled = false;
 
+	std::unique_ptr<base::PowerSaveBlocker> _powerSaveBlocker;
+
 	MTP::DcId _broadcastDcId = 0;
 	base::flat_map<not_null<LoadPartTask*>, LoadingPart> _broadcastParts;
 	base::flat_set<
diff --git a/Telegram/SourceFiles/media/player/media_player_instance.cpp b/Telegram/SourceFiles/media/player/media_player_instance.cpp
index bafd1c258..a4ebcba4a 100644
--- a/Telegram/SourceFiles/media/player/media_player_instance.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_instance.cpp
@@ -13,6 +13,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_streaming.h"
 #include "data/data_file_click_handler.h"
 #include "base/random.h"
+#include "base/power_save_blocker.h"
 #include "media/audio/media_audio.h"
 #include "media/audio/media_audio_capture.h"
 #include "media/streaming/media_streaming_instance.h"
@@ -568,6 +569,26 @@ bool Instance::moveInPlaylist(
 	return false;
 }
 
+void Instance::updatePowerSaveBlocker(
+		not_null<Data*> data,
+		const TrackState &state) {
+	const auto block = !IsPausedOrPausing(state.state)
+		&& !IsStoppedOrStopping(state.state);
+	const auto blockVideo = block
+		&& data->current.audio()
+		&& data->current.audio()->isVideoMessage();
+	base::UpdatePowerSaveBlocker(
+		data->powerSaveBlocker,
+		block,
+		base::PowerSaveBlockType::PreventAppSuspension,
+		"Audio playback is active"); // const char*, not QString-construct.
+	base::UpdatePowerSaveBlocker(
+		data->powerSaveBlockerVideo,
+		blockVideo,
+		base::PowerSaveBlockType::PreventDisplaySleep,
+		"Video playback is active"); // const char*, not QString-construct.
+}
+
 void Instance::ensureShuffleMove(not_null<Data*> data, int delta) {
 	const auto raw = data->shuffleData.get();
 	if (delta < 0) {
@@ -1170,6 +1191,8 @@ void Instance::emitUpdate(AudioMsgId::Type type, CheckCallback check) {
 				streamed->progress.updateState(state);
 			}
 		}
+		updatePowerSaveBlocker(data, state);
+
 		auto finished = false;
 		_updatedNotifier.fire_copy({state});
 		if (data->isPlaying && state.state == State::StoppedAtEnd) {
diff --git a/Telegram/SourceFiles/media/player/media_player_instance.h b/Telegram/SourceFiles/media/player/media_player_instance.h
index 5155ac69b..f19aa7032 100644
--- a/Telegram/SourceFiles/media/player/media_player_instance.h
+++ b/Telegram/SourceFiles/media/player/media_player_instance.h
@@ -35,6 +35,10 @@ enum class Error;
 } // namespace Streaming
 } // namespace Media
 
+namespace base {
+class PowerSaveBlocker;
+} // namespace base
+
 namespace Media {
 namespace Player {
 
@@ -195,6 +199,8 @@ private:
 		bool resumeOnCallEnd = false;
 		std::unique_ptr<Streamed> streamed;
 		std::unique_ptr<ShuffleData> shuffleData;
+		std::unique_ptr<base::PowerSaveBlocker> powerSaveBlocker;
+		std::unique_ptr<base::PowerSaveBlocker> powerSaveBlockerVideo;
 	};
 
 	struct SeekingChanges {
@@ -234,6 +240,9 @@ private:
 	void validateOtherPlaylist(not_null<Data*> data);
 	void playlistUpdated(not_null<Data*> data);
 	bool moveInPlaylist(not_null<Data*> data, int delta, bool autonext);
+	void updatePowerSaveBlocker(
+		not_null<Data*> data,
+		const TrackState &state);
 	HistoryItem *itemByIndex(not_null<Data*> data, int index);
 	void stopAndClear(not_null<Data*> data);
 
diff --git a/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp b/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
index b7690782a..2254d0182 100644
--- a/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
@@ -60,6 +60,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "window/window_session_controller.h"
 #include "window/window_controller.h"
 #include "base/platform/base_platform_info.h"
+#include "base/power_save_blocker.h"
 #include "base/random.h"
 #include "base/unixtime.h"
 #include "base/qt_signal_producer.h"
@@ -227,6 +228,7 @@ struct OverlayWidget::Streamed {
 
 	Streaming::Instance instance;
 	PlaybackControls controls;
+	std::unique_ptr<base::PowerSaveBlocker> powerSaveBlocker;
 
 	bool withSound = false;
 	bool pausedBySeek = false;
@@ -2791,6 +2793,21 @@ bool OverlayWidget::createStreamingObjects() {
 	return true;
 }
 
+void OverlayWidget::updatePowerSaveBlocker(
+		const Player::TrackState &state) {
+	Expects(_streamed != nullptr);
+
+	const auto block = (_document != nullptr)
+		&& _document->isVideoFile()
+		&& !IsPausedOrPausing(state.state)
+		&& !IsStoppedOrStopping(state.state);
+	base::UpdatePowerSaveBlocker(
+		_streamed->powerSaveBlocker,
+		block,
+		base::PowerSaveBlockType::PreventDisplaySleep,
+		"Video playback is active"); // const char*, not QString-construct.
+}
+
 QImage OverlayWidget::transformedShownContent() const {
 	return transformShownContent(
 		videoShown() ? currentVideoFrameImage() : _staticContent,
@@ -3259,6 +3276,7 @@ void OverlayWidget::updatePlaybackState() {
 	const auto state = _streamed->instance.player().prepareLegacyState();
 	if (state.position != kTimeUnknown && state.length != kTimeUnknown) {
 		_streamed->controls.updatePlayback(state);
+		updatePowerSaveBlocker(state);
 		_touchbarTrackState.fire_copy(state);
 	}
 }
diff --git a/Telegram/SourceFiles/media/view/media_view_overlay_widget.h b/Telegram/SourceFiles/media/view/media_view_overlay_widget.h
index 40f6edbb6..49ab57655 100644
--- a/Telegram/SourceFiles/media/view/media_view_overlay_widget.h
+++ b/Telegram/SourceFiles/media/view/media_view_overlay_widget.h
@@ -310,6 +310,7 @@ private:
 	[[nodiscard]] bool createStreamingObjects();
 	void handleStreamingUpdate(Streaming::Update &&update);
 	void handleStreamingError(Streaming::Error &&error);
+	void updatePowerSaveBlocker(const Player::TrackState &state);
 
 	void initThemePreview();
 	void destroyThemePreview();
diff --git a/Telegram/SourceFiles/media/view/media_view_pip.cpp b/Telegram/SourceFiles/media/view/media_view_pip.cpp
index ea0534490..76235fe32 100644
--- a/Telegram/SourceFiles/media/view/media_view_pip.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_pip.cpp
@@ -23,6 +23,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "main/main_session.h"
 #include "core/application.h"
 #include "base/platform/base_platform_info.h"
+#include "base/power_save_blocker.h"
 #include "ui/platform/ui_platform_utility.h"
 #include "ui/widgets/buttons.h"
 #include "ui/wrap/fade_wrap.h"
@@ -1512,6 +1513,7 @@ void Pip::updatePlaybackState() {
 		return;
 	}
 	_playbackProgress->updateState(state);
+	updatePowerSaveBlocker(state);
 
 	qint64 position = 0;
 	if (Player::IsStoppedAtEnd(state.state)) {
@@ -1529,6 +1531,17 @@ void Pip::updatePlaybackState() {
 	}
 }
 
+void Pip::updatePowerSaveBlocker(const Player::TrackState &state) {
+	const auto block = _data->isVideoFile()
+		&& !IsPausedOrPausing(state.state)
+		&& !IsStoppedOrStopping(state.state);
+	base::UpdatePowerSaveBlocker(
+		_powerSaveBlocker,
+		block,
+		base::PowerSaveBlockType::PreventDisplaySleep,
+		"Video playback is active"); // const char*, not QString-construct.
+}
+
 void Pip::updatePlaybackTexts(
 		int64 position,
 		int64 length,
diff --git a/Telegram/SourceFiles/media/view/media_view_pip.h b/Telegram/SourceFiles/media/view/media_view_pip.h
index 155481549..ec65ed206 100644
--- a/Telegram/SourceFiles/media/view/media_view_pip.h
+++ b/Telegram/SourceFiles/media/view/media_view_pip.h
@@ -14,6 +14,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include <QtCore/QPointer>
 
+namespace base {
+class PowerSaveBlocker;
+} // namespace base
+
 namespace Data {
 class DocumentMedia;
 } // namespace Data
@@ -187,6 +191,7 @@ private:
 	void saveGeometry();
 
 	void updatePlaybackState();
+	void updatePowerSaveBlocker(const Player::TrackState &state);
 	void updatePlayPauseResumeState(const Player::TrackState &state);
 	void restartAtSeekPosition(crl::time position);
 
@@ -244,12 +249,13 @@ private:
 	void seekFinish(float64 value);
 
 	const not_null<Delegate*> _delegate;
-	not_null<DocumentData*> _data;
+	const not_null<DocumentData*> _data;
 	FullMsgId _contextId;
 	Streaming::Instance _instance;
 	bool _opengl = false;
 	PipPanel _panel;
 	QSize _size;
+	std::unique_ptr<base::PowerSaveBlocker> _powerSaveBlocker;
 	std::unique_ptr<PlaybackProgress> _playbackProgress;
 	std::shared_ptr<Data::DocumentMedia> _dataMedia;
 
diff --git a/Telegram/lib_base b/Telegram/lib_base
index 5d99fef79..9efbcbfeb 160000
--- a/Telegram/lib_base
+++ b/Telegram/lib_base
@@ -1 +1 @@
-Subproject commit 5d99fef79a9a311896199b223a0325c0998f9c9a
+Subproject commit 9efbcbfebeba378a269b73bf7040b7a1f8e7ca57