6 files changed, 39 insertions, 6 deletions
diff --git a/src/multimedia/qmediaformat.cpp b/src/multimedia/qmediaformat.cpp
index 3c2841bfa..77cb4bbbe 100644
--- a/src/multimedia/qmediaformat.cpp
+++ b/src/multimedia/qmediaformat.cpp
@@ -335,4 +335,13 @@ QString QMediaFormat::videoCodecDescription(QMediaFormat::VideoCodec c)
     return QString::fromUtf8(descriptions[int(c) + 1]);
 }
 
+bool QMediaFormat::operator==(const QMediaFormat &other) const
+{
+    Q_ASSERT(!d);
+    return fmtMode == other.fmtMode &&
+            fmt == other.fmt &&
+            audio == other.audio &&
+            video == other.video;
+}
+
 QT_END_NAMESPACE
diff --git a/src/multimedia/qmediaformat.h b/src/multimedia/qmediaformat.h
index 3b8b9d9ce..4bd070135 100644
--- a/src/multimedia/qmediaformat.h
+++ b/src/multimedia/qmediaformat.h
@@ -147,6 +147,10 @@ public:
     static QString audioCodecDescription(QMediaFormat::AudioCodec c);
     static QString videoCodecDescription(QMediaFormat::VideoCodec c);
 
+    bool operator==(const QMediaFormat &other) const;
+    bool operator!=(const QMediaFormat &other) const
+    { return !operator==(other); }
+
 protected:
     friend class QMediaFormatPrivate;
     Mode fmtMode;
diff --git a/src/multimedia/recording/qmediacapturesession.cpp b/src/multimedia/recording/qmediacapturesession.cpp
index 7580a4a8e..d45ae84db 100644
--- a/src/multimedia/recording/qmediacapturesession.cpp
+++ b/src/multimedia/recording/qmediacapturesession.cpp
@@ -203,14 +203,14 @@ QMediaEncoder *QMediaCaptureSession::encoder()
     return d_ptr->encoder;
 }
 
-void QMediaCaptureSession::setEncoder(QMediaEncoder *recorder)
+void QMediaCaptureSession::setEncoder(QMediaEncoder *encoder)
 {
-    if (d_ptr->encoder == recorder)
+    if (d_ptr->encoder == encoder)
         return;
     if (d_ptr->encoder)
         d_ptr->encoder->setCaptureSession(nullptr);
 
-    d_ptr->encoder = recorder;
+    d_ptr->encoder = encoder;
     if (d_ptr->encoder)
         d_ptr->encoder->setCaptureSession(this);
     emit encoderChanged();
diff --git a/src/multimedia/recording/qmediaencoder.cpp b/src/multimedia/recording/qmediaencoder.cpp
index 127304c26..ad050aaa8 100644
--- a/src/multimedia/recording/qmediaencoder.cpp
+++ b/src/multimedia/recording/qmediaencoder.cpp
@@ -165,7 +165,8 @@ void QMediaEncoder::setCaptureSession(QMediaCaptureSession *session)
     }
 
     d->control = d->captureSession->platformSession()->mediaEncoder();
-    Q_ASSERT(d->control);
+    if (!d->control)
+        return;
 
     connect(d->control, SIGNAL(stateChanged(QMediaEncoder::State)),
             this, SLOT(_q_stateChanged(QMediaEncoder::State)));
@@ -303,7 +304,8 @@ void QMediaEncoder::setEncoderSettings(const QMediaEncoderSettings &settings)
     Q_D(QMediaEncoder);
 
     d->encoderSettings = settings;
-    d->control->setEncoderSettings(settings);
+    if (d->control)
+        d->control->setEncoderSettings(settings);
     d->applySettingsLater();
 }
 
diff --git a/src/multimedia/recording/qmediaencodersettings.cpp b/src/multimedia/recording/qmediaencodersettings.cpp
index 1a4657578..da70caa6b 100644
--- a/src/multimedia/recording/qmediaencodersettings.cpp
+++ b/src/multimedia/recording/qmediaencodersettings.cpp
@@ -122,7 +122,6 @@ constexpr QMediaFormat::VideoCodec videoPriorityList[] =
 class QMediaEncoderSettingsPrivate  : public QSharedData
 {
 public:
-    bool isNull = true;
     QMediaEncoderSettings::EncodingMode encodingMode = QMediaEncoderSettings::ConstantQualityEncoding;
     QMediaEncoderSettings::Quality quality = QMediaEncoderSettings::NormalQuality;
 
@@ -437,6 +436,21 @@ void QMediaEncoderSettings::setAudioSampleRate(int rate)
     d->audioSampleRate = rate;
 }
 
+bool QMediaEncoderSettings::operator==(const QMediaEncoderSettings &other) const
+{
+    if (d == other.d)
+        return true;
+    return QMediaFormat::operator==(other) &&
+        d->encodingMode == other.d->encodingMode &&
+        d->quality == other.d->quality &&
+        d->audioBitrate == other.d->audioBitrate &&
+        d->audioSampleRate == other.d->audioSampleRate &&
+        d->audioChannels == other.d->audioChannels &&
+        d->videoResolution == other.d->videoResolution &&
+        d->videoFrameRate == other.d->videoFrameRate &&
+        d->videoBitRate == other.d->videoBitRate;
+}
+
 
 class QImageEncoderSettingsPrivate  : public QSharedData
 {
diff --git a/src/multimedia/recording/qmediaencodersettings.h b/src/multimedia/recording/qmediaencodersettings.h
index 2b7532543..0e490f47e 100644
--- a/src/multimedia/recording/qmediaencodersettings.h
+++ b/src/multimedia/recording/qmediaencodersettings.h
@@ -112,6 +112,10 @@ public:
     int audioSampleRate() const;
     void setAudioSampleRate(int rate);
 
+    bool operator==(const QMediaEncoderSettings &other) const;
+    bool operator!=(const QMediaEncoderSettings &other) const
+    { return !operator==(other); }
+
 private:
     QSharedDataPointer<QMediaEncoderSettingsPrivate> d;
 };