QVideoProbe ¶

概要 ¶

详细描述 ¶

QMediaPlayer *player = new QMediaPlayer();
QVideoProbe *probe = new QVideoProbe;
connect(probe, SIGNAL(videoFrameProbed(QVideoFrame)), this, SLOT(processFrame(QVideoFrame)));
probe->setSource(player); // Returns true, hopefully.
player->setVideoOutput(myVideoSurface);
player->setMedia(QUrl::fromLocalFile("observation.mp4"));
player->play(); // Start receiving frames as they get presented to myVideoSurface
											

This same approach works with the QCamera object as well, to receive viewfinder or video frames as they are captured.

另请参阅

QAudioProbe QMediaPlayer QCamera

class QVideoProbe ( [ parent=None ] ) ¶

param parent

QObject

创建新 QVideoProbe class with parent . After setting the source to monitor with setSource() ， videoFrameProbed() signal will be emitted when video frames are flowing in the source media object.

PySide2.QtMultimedia.QVideoProbe. flush ( ) ¶

PySide2.QtMultimedia.QVideoProbe. isActive ( ) ¶

返回类型

bool

Returns true if this probe is monitoring something, or false otherwise.

The source being monitored does not need to be active.

PySide2.QtMultimedia.QVideoProbe. setSource ( source ) ¶

参数

source – QMediaObject

返回类型

bool

Sets the media object to monitor to source .

若 source is zero, this probe will be deactivated and this function wil return true.

If the media object does not support monitoring video, this function will return false.

Any previously monitored objects will no longer be monitored. Passing in the same object will be ignored, but monitoring will continue.

PySide2.QtMultimedia.QVideoProbe. setSource ( source ) ¶

参数

source – QMediaRecorder

返回类型

bool

Starts monitoring the given mediaRecorder .

If there is no mediaObject associated with mediaRecorder , or if it is zero, this probe will be deactivated and this function wil return true.

If the media recorder instance does not support monitoring video, this function will return false.

Any previously monitored objects will no longer be monitored. Passing in the same object will be ignored, but monitoring will continue.

PySide2.QtMultimedia.QVideoProbe. videoFrameProbed ( frame ) ¶

参数

frame – QVideoFrame