diff --git a/headers/FractalData.hpp b/headers/FractalData.hpp
index a0149b4..ee11bd3 100644
--- a/headers/FractalData.hpp
+++ b/headers/FractalData.hpp
@@ -37,6 +37,7 @@ class FractalData {
 	QVector3D camera = baseCamera;
 	qreal zoomCoefficient = defaultZoom;
 	qreal rotateSpeed = defaultSpeed;
+	qreal absoluteSpeed = defaultSpeed;
 	bool isRotating = false;
 
 
@@ -48,6 +49,8 @@ class FractalData {
 
 	void setZoomCoefficient(qreal zoomCoefficient = defaultZoom);
 
+	void setAbsoluteSpeed(qreal absoluteSpeed);
+
 	[[nodiscard]] QJsonObject serialize() const;
 
 	void readFrom(QJsonDocument &in);
diff --git a/headers/FractalWidget.hpp b/headers/FractalWidget.hpp
index b3771b9..b82f8fe 100644
--- a/headers/FractalWidget.hpp
+++ b/headers/FractalWidget.hpp
@@ -3,8 +3,10 @@
 #include "FractalData.hpp"
 #include "GeometryEngine.hpp"
 
+#include <QApplication>
 #include <QElapsedTimer>
 #include <QMatrix4x4>
+#include <QMouseEvent>
 #include <QOpenGLFunctions>
 #include <QOpenGLShaderProgram>
 #include <QOpenGLTexture>
@@ -12,6 +14,8 @@
 #include <QQuaternion>
 #include <QTimer>
 #include <QVector2D>
+#include <cmath>
+#include <utility>
 
 class FractalWidget : public QOpenGLWidget, protected QOpenGLFunctions {
 	Q_OBJECT
@@ -56,5 +60,5 @@ class FractalWidget : public QOpenGLWidget, protected QOpenGLFunctions {
 	QVector2D mousePressPosition;
 	QVector3D pointAxisX = QVector3D(1.0, 0.0, 1.5);
 	QVector3D pointAxisY = QVector3D(0.0, 1.0, 1.5);
-    qreal autoRotationPos = 0.0;
+	qreal autoRotationPos = 0.0;
 };
diff --git a/src/FractalData.cpp b/src/FractalData.cpp
index 09239df..e1998b8 100644
--- a/src/FractalData.cpp
+++ b/src/FractalData.cpp
@@ -118,3 +118,7 @@ FractalData::FractalData(qreal a, qreal b, qreal c, quint8 n, FractalType type,
 void FractalData::setZoomCoefficient(qreal zoomCoefficient) {
 	FractalData::zoomCoefficient = zoomCoefficient;
 }
+
+void FractalData::setAbsoluteSpeed(qreal absoluteSpeed) {
+	FractalData::absoluteSpeed = absoluteSpeed;
+}
diff --git a/src/FractalWidget.cpp b/src/FractalWidget.cpp
index 10997f5..d564308 100644
--- a/src/FractalWidget.cpp
+++ b/src/FractalWidget.cpp
@@ -1,9 +1,5 @@
 #include "FractalWidget.hpp"
 
-#include <QApplication>
-#include <QMouseEvent>
-#include <cmath>
-#include <utility>
 
 namespace {
 	QVector3D transformColor(const QColor &color) {
@@ -51,21 +47,21 @@ void FractalWidget::mouseReleaseEvent(QMouseEvent *) {
 }
 
 namespace {
-QVector3D rotate(QVector3D point, qreal alpha, QVector3D axis) {
-	qreal t11 = cos(alpha) + (1 - cos(alpha)) * axis.x() * axis.x();
-	qreal t12 = (1 - cos(alpha)) * axis.x() * axis.y() - sin(alpha) * axis.z();
-	qreal t13 = (1 - cos(alpha)) * axis.x() * axis.z() + sin(alpha) * axis.y();
-	qreal t21 = (1 - cos(alpha)) * axis.x() * axis.y() + sin(alpha) * axis.z();
-	qreal t22 = cos(alpha) + (1 - cos(alpha)) * axis.y() * axis.y();
-	qreal t23 = (1 - cos(alpha)) * axis.y() * axis.z() - sin(alpha) * axis.x();
-	qreal t31 = (1 - cos(alpha)) * axis.x() * axis.z() - sin(alpha) * axis.y();
-	qreal t32 = (1 - cos(alpha)) * axis.y() * axis.z() + sin(alpha) * axis.x();
-	qreal t33 = cos(alpha) + (1 - cos(alpha)) * axis.z() * axis.z();
-	return QVector3D(point.x() * t11 + point.y() * t21 + point.z() * t31,
-					 point.x() * t12 + point.y() * t22 + point.z() * t32,
-					 point.x() * t13 + point.y() * t23 + point.z() * t33);
-}
-};
+	QVector3D rotate(QVector3D point, qreal alpha, QVector3D axis) {
+		qreal t11 = cos(alpha) + (1 - cos(alpha)) * axis.x() * axis.x();
+		qreal t12 = (1 - cos(alpha)) * axis.x() * axis.y() - sin(alpha) * axis.z();
+		qreal t13 = (1 - cos(alpha)) * axis.x() * axis.z() + sin(alpha) * axis.y();
+		qreal t21 = (1 - cos(alpha)) * axis.x() * axis.y() + sin(alpha) * axis.z();
+		qreal t22 = cos(alpha) + (1 - cos(alpha)) * axis.y() * axis.y();
+		qreal t23 = (1 - cos(alpha)) * axis.y() * axis.z() - sin(alpha) * axis.x();
+		qreal t31 = (1 - cos(alpha)) * axis.x() * axis.z() - sin(alpha) * axis.y();
+		qreal t32 = (1 - cos(alpha)) * axis.y() * axis.z() + sin(alpha) * axis.x();
+		qreal t33 = cos(alpha) + (1 - cos(alpha)) * axis.z() * axis.z();
+		return QVector3D(point.x() * t11 + point.y() * t21 + point.z() * t31,
+						 point.x() * t12 + point.y() * t22 + point.z() * t32,
+						 point.x() * t13 + point.y() * t23 + point.z() * t33);
+	}
+};// namespace
 
 void FractalWidget::rotateFractal(QVector2D const &diff) {
 	if(diff.x() == 0 && diff.y() == 0)
@@ -154,9 +150,9 @@ void FractalWidget::paintGL() {
 
 	QMatrix4x4 matrix;
 	matrix.translate(0.0, 0.0, fractalData->zoomCoefficient);
-    matrix.lookAt(fractalData->camera, -fractalData->camera, pointAxisY - fractalData->camera);
+	matrix.lookAt(fractalData->camera, -fractalData->camera, pointAxisY - fractalData->camera);
 
-    program.setUniformValue("mvp_matrix", projection * matrix);
+	program.setUniformValue("mvp_matrix", projection * matrix);
 
 	program.setUniformValue("POWER", (GLint) fractalData->n);
 	program.setUniformValue("Resolution", dynamic_cast<QApplication *>(QCoreApplication::instance())->devicePixelRatio() * QVector2D(this->width(), this->height()));
@@ -179,9 +175,9 @@ void FractalWidget::setFractalData(FractalData *data) {
 
 void FractalWidget::autoRotate() {
 	if(fractalData->isRotating) {
-		qreal nextPos = static_cast<qreal>(elapsedTimer->elapsed());
-		qreal dx = (nextPos - autoRotationPos) / 5;
+		auto nextPos = static_cast<qreal>(elapsedTimer->elapsed());
+		qreal dx = (nextPos - autoRotationPos) * fractalData->absoluteSpeed;
 		autoRotationPos = nextPos;
-		rotateFractal({dx, 0.0});
+		rotateFractal({static_cast<float>(dx), 0.0});
 	}
 }
diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index 9755b94..e2f139e 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -24,6 +24,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 	ui->setupUi(this);
 	ui->recordWidget->close();
 	prevSize = this->size();
+	ui->rotationSlider->setValue(100 * FractalData::defaultSpeed);
 	connectBoxBar();
 	connect(ui->recordButton, &QPushButton::clicked, [&]() { recordClickAction(); });
 	setValues();
@@ -112,11 +113,15 @@ void MainWindow::connectBoxBar() {
 	connect(ui->fractalColorButton, &QPushButton::clicked, [&]() { askColor(FRACTAL); });
 	connect(ui->ambienceColorButton, &QPushButton::clicked, [&]() { askColor(AMBIENCE); });
 	connect(ui->randomizeButton, &QPushButton::clicked, [&]() { generateRandom(); });
-	connect(ui->rotationBox, &QCheckBox::clicked, [&]() { readAndDraw(); });
+	connect(ui->rotationBox, &QCheckBox::stateChanged, [&]() { readAndDraw(); });
 	connect(ui->zoomButton, &QPushButton::clicked, [&]() {
 		data.setZoomCoefficient();
 		ui->fractalWidget->repaint();
 	});
+	connect(ui->rotationSlider, &QSlider::valueChanged, [&]() {
+		ui->rotationBox->setCheckState(Qt::Checked);
+		data.setAbsoluteSpeed(ui->rotationSlider->value() / 100.0);
+	});
 }
 
 void MainWindow::readAndDraw() {
@@ -240,7 +245,7 @@ void MainWindow::saveVideo() {
 			return;
 		}
 		//int framerate = frames * 1000 / time;
-		QString command = QString("ffmpeg -y -pattern_type glob -i '%1/*.png' -c:v libx264 -r 60 -pix_fmt yuv420p -vf \"crop=trunc(iw/2)*2:trunc(ih/2)*2\" %2").arg(temporaryDir->path(), fileName);
+		QString command = QString("ffmpeg -y -pattern_type glob -i '%1/*.png' -c:v libx264 -r 60 -pix_fmt yuv420p -vf \"crop=trunc(iw/2)*2:trunc(ih/2)*2\" %2 > /dev/null").arg(temporaryDir->path(), fileName);
 		std::system(command.toStdString().data());
 	}
 }
diff --git a/ui/mainwindow.ui b/ui/mainwindow.ui
index e04079d..dbe7f8e 100644
--- a/ui/mainwindow.ui
+++ b/ui/mainwindow.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>1000</width>
-    <height>855</height>
+    <height>871</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -275,6 +275,23 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QLabel" name="rotationLabel">
+         <property name="text">
+          <string>Rotation speed</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QSlider" name="rotationSlider">
+         <property name="pageStep">
+          <number>1</number>
+         </property>
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+        </widget>
+       </item>
        <item>
         <widget class="QFrame" name="frame8">
          <property name="frameShape">