QVideoEncoderSettings Class▲
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Header: QVideoEncoderSettings
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qmake: QT += multimedia
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Group: QVideoEncoderSettings is part of multimedia, multimedia_recording
Detailed Description▲
A video encoder settings object is used to specify the video encoder settings used by QMediaRecorder. Video encoder settings are selected by constructing a QVideoEncoderSettings object, setting the desired properties and then passing it to a QMediaRecorder instance using the QMediaRecorder::setEncodingSettings() function.
QVideoEncoderSettings videoSettings;
videoSettings.setCodec("video/mpeg2");
videoSettings.setResolution(640, 480);
recorder->setVideoSettings(videoSettings);See Also▲
See also QMediaRecorder, QVideoEncoderSettingsControl
Member Function Documentation▲
QVideoEncoderSettings::QVideoEncoderSettings()▲
Constructs a null video encoder settings object.
QVideoEncoderSettings::QVideoEncoderSettings(const QVideoEncoderSettings &other)▲
Constructs a copy of the video encoder settings object other.
QVideoEncoderSettings::~QVideoEncoderSettings()▲
Destroys a video encoder settings object.
int QVideoEncoderSettings::bitRate() const▲
QString QVideoEncoderSettings::codec() const▲
QMultimedia::EncodingMode QVideoEncoderSettings::encodingMode() const▲
QVariant QVideoEncoderSettings::encodingOption(const QString &option) const▲
QVariantMap QVideoEncoderSettings::encodingOptions() const▲
Returns the all the encoding options as QVariantMap.
See Also▲
See also encodingOption(), setEncodingOptions()
qreal QVideoEncoderSettings::frameRate() const▲
bool QVideoEncoderSettings::isNull() const▲
Identifies if a video encoder settings object is uninitalized.
Returns true if the settings are null, and false if they are not.
QMultimedia::EncodingQuality QVideoEncoderSettings::quality() const▲
QSize QVideoEncoderSettings::resolution() const▲
void QVideoEncoderSettings::setBitRate(int value)▲
void QVideoEncoderSettings::setCodec(const QString &codec)▲
void QVideoEncoderSettings::setEncodingMode(QMultimedia::EncodingMode mode)▲
Sets the video encoding mode.
If QMultimedia::ConstantQualityEncoding is set, the quality encoding parameter is used and bit rate is ignored, otherwise the bitrate is used.
The rest of encoding settings are respected regardless of encoding mode.
See Also▲
See also encodingMode(), QMultimedia::EncodingMode
void QVideoEncoderSettings::setEncodingOption(const QString &option, const QVariant &value)▲
Set the encoding option value.
The supported set and meaning of encoding options are system and selected codec specific.
See Also▲
See also encodingOption(), setEncodingOptions()
void QVideoEncoderSettings::setEncodingOptions(const QVariantMap &options)▲
Replace all the encoding options with options.
The supported set and meaning of encoding options are system and selected codec specific.
See Also▲
See also encodingOptions(), encodingOption(), setEncodingOption()
void QVideoEncoderSettings::setFrameRate(qreal rate)▲
Sets the video frame rate.
A value of 0 indicates the encoder should make an optimal choice based on what is available from the video source and the limitations of the codec.
See Also▲
See also frameRate()
void QVideoEncoderSettings::setQuality(QMultimedia::EncodingQuality quality)▲
Sets the video encoding quality.
Setting the video quality parameter allows backend to choose the balanced set of encoding parameters to achieve the desired quality level.
The quality settings parameter is only used in the constant quality encoding mode. The quality settings parameter is only used in the constant quality encoding mode.
See Also▲
See also quality()
void QVideoEncoderSettings::setResolution(const QSize &resolution)▲
Sets the resolution of the encoded video.
An empty QSize indicates the encoder should make an optimal choice based on what is available from the video source and the limitations of the codec.
See Also▲
See also resolution()
void QVideoEncoderSettings::setResolution(int width, int height)▲
Sets the width and height of the resolution of the encoded video.
This is an overloaded function.
bool QVideoEncoderSettings::operator!=(const QVideoEncoderSettings &other) const▲
Determines if other is of equal value to a video encoder settings object.
Returns true if the settings objects are not of equal value, and false if they are of equal value.
QVideoEncoderSettings &QVideoEncoderSettings::operator=(const QVideoEncoderSettings &other)▲
Assigns the value of other to a video encoder settings object.
bool QVideoEncoderSettings::operator==(const QVideoEncoderSettings &other) const▲
Determines if other is of equal value to a video encoder settings object.
Returns true if the settings objects are of equal value, and false if they are not of equal value.