The QVideoEncoderSettings class provides a set of video encoder settings. More...

Public Methods
	QVideoEncoderSettings ()

	QVideoEncoderSettings (const QVideoEncoderSettings &other)

	~QVideoEncoderSettings ()

int	bitRate () const

QString	codec () const

QMultimedia::EncodingMode	encodingMode () const

QVariant	encodingOption (const QString &option) const

QVariantMap	encodingOptions () const

qreal	frameRate () const

bool	isNull () const

bool	operator!= (const QVideoEncoderSettings &other) const

QVideoEncoderSettings &	operator= (const QVideoEncoderSettings &other)

bool	operator== (const QVideoEncoderSettings &other) const

QMultimedia::EncodingQuality	quality () const

QSize	resolution () const

void	setBitRate (int bitrate)

void	setCodec (const QString &codecName)

void	setEncodingMode (QMultimedia::EncodingMode mode)

void	setEncodingOption (const QString &option, const QVariant &value)

void	setEncodingOptions (const QVariantMap &options)

void	setFrameRate (qreal rate)

void	setQuality (QMultimedia::EncodingQuality quality)

void	setResolution (const QSize &resolution)

void	setResolution (int width, int height)

Detailed Description

The QVideoEncoderSettings class provides a set of video encoder settings.

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() method.

QVideoEncoderSettings videoSettings;
videoSettings.setCodec("video/mpeg2");
videoSettings.setResolution(640, 480);
 
recorder->setVideoSettings(videoSettings);

See also: QMediaRecorder, QVideoEncoderSettingsControl

Constructor & Destructor 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.

Method Documentation

int QVideoEncoderSettings::bitRate ( ) const

Returns bit rate of the encoded video stream in bits per second.

QString QVideoEncoderSettings::codec ( ) const

Returns the video codec.

QMultimedia::EncodingMode QVideoEncoderSettings::encodingMode ( ) const

Returns the video encoding mode.

See also: QMultimedia::EncodingMode

QVariant QVideoEncoderSettings::encodingOption ( const QString & option ) const

Returns the value of encoding option.

See also: setEncodingOption(), encodingOptions()

QVariantMap QVideoEncoderSettings::encodingOptions ( ) const

Returns the all the encoding options as QVariantMap.

See also: encodingOption(), setEncodingOptions()

qreal QVideoEncoderSettings::frameRate ( ) const

Returns the video frame rate.

See also: setFrameRate()

bool QVideoEncoderSettings::isNull ( ) const

Identifies if a video encoder settings object is uninitialized.

Returns true if the settings are null, and false if they are not.

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 )

Copy assigns from other and returns a reference to this 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.

QMultimedia::EncodingQuality QVideoEncoderSettings::quality ( ) const

Returns the video encoding quality.

QSize QVideoEncoderSettings::resolution ( ) const

Returns the resolution of the encoded video.

See also: setResolution()

void QVideoEncoderSettings::setBitRate ( int bitrate )

Sets the bit rate of the encoded video stream to bitrate.

void QVideoEncoderSettings::setCodec ( const QString & codecName )

Sets the video to the given codecName.

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: 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: 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: 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.

void QVideoEncoderSettings::setQuality ( QMultimedia::EncodingQuality quality )

Sets the video encoding quality, which is only used in the QMultimedia::ConstantQualityEncoding.

Setting the video quality parameter allows backend to choose the balanced set of encoding parameters to achieve the desired quality level.

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.

void QVideoEncoderSettings::setResolution	(	int	width,
		int	height
	)

Sets the width and height of the resolution of the encoded video.

Public Methods

Detailed Description

Constructor & Destructor Documentation

Method Documentation