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() function.
QVideoEncoderSettings videoSettings;
videoSettings.setCodec("video/mpeg2");
videoSettings.setResolution(640, 480);
recorder->setEncodingSettings(audioSettings, videoSettings);
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
Returns bit rate of the encoded video stream in bits per second.
See also setBitRate().
QString QVideoEncoderSettings::codec () const
Returns the video codec.
See also setCodec().
Returns the video encoding mode.
See also setEncodingMode() and QtMultimediaKit::EncodingMode.
qreal QVideoEncoderSettings::frameRate () const
Returns the video frame rate.
See also setFrameRate().
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.
Returns the video encoding quality.
See also setQuality().
QSize QVideoEncoderSettings::resolution () const
Returns the resolution of the encoded video.
See also setResolution().
void QVideoEncoderSettings::setBitRate ( int value )
Sets the bit rate of the encoded video stream to value.
See also bitRate().
void QVideoEncoderSettings::setCodec ( const QString & codec )
Sets the video codec.
See also codec().
Sets the video encoding mode.
If QtMultimediaKit::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 encodingMode() and QtMultimediaKit::EncodingMode.
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 frameRate().
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 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 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.
