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diff --git a/examples/multimedia/video/qmlvideo/frequencymonitor.h b/examples/multimedia/video/qmlvideo/frequencymonitor.h
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+++ b/examples/multimedia/video/qmlvideo/frequencymonitor.h
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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef FREQUENCYMONITOR_H
+#define FREQUENCYMONITOR_H
+
+#include <QObject>
+#include <QTimer>
+
+class FrequencyMonitorPrivate;
+
+/**
+ * Class for measuring frequency of events
+ *
+ * Occurrence of the event is notified by the client via the notify() slot.
+ * On a regular interval, both an instantaneous and a rolling average
+ * event frequency are calculated.
+ */
+class FrequencyMonitor : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(FrequencyMonitor)
+    Q_PROPERTY(QString label READ label WRITE setLabel NOTIFY labelChanged)
+    Q_PROPERTY(bool active READ active WRITE setActive NOTIFY activeChanged)
+    Q_PROPERTY(int samplingInterval READ samplingInterval WRITE setSamplingInterval NOTIFY
+                       samplingIntervalChanged)
+    Q_PROPERTY(
+            int traceInterval READ traceInterval WRITE setTraceInterval NOTIFY traceIntervalChanged)
+    Q_PROPERTY(qreal instantaneousFrequency READ instantaneousFrequency NOTIFY
+                       instantaneousFrequencyChanged)
+    Q_PROPERTY(qreal averageFrequency READ averageFrequency NOTIFY averageFrequencyChanged)
+
+public:
+    FrequencyMonitor(QObject *parent = nullptr);
+    ~FrequencyMonitor();
+
+    static void qmlRegisterType();
+
+    QString label() const;
+    bool active() const;
+    int samplingInterval() const;
+    int traceInterval() const;
+    qreal instantaneousFrequency() const;
+    qreal averageFrequency() const;
+
+signals:
+    void labelChanged(const QString &value);
+    void activeChanged(bool);
+    void samplingIntervalChanged(int value);
+    void traceIntervalChanged(int value);
+    void frequencyChanged();
+    void instantaneousFrequencyChanged(qreal value);
+    void averageFrequencyChanged(qreal value);
+
+public slots:
+    Q_INVOKABLE void notify();
+    Q_INVOKABLE void trace();
+    void setActive(bool value);
+    void setLabel(const QString &value);
+    void setSamplingInterval(int value);
+    void setTraceInterval(int value);
+
+private:
+    FrequencyMonitorPrivate *d_ptr;
+};
+
+#endif // FREQUENCYMONITOR_H