QVideoProbe露
- PyQt5.QtMultimedia.QVideoProbe
Inherits from QObject.
Description露
The QVideoProbe class allows you to monitor video frames being played or recorded.
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.
See also
Methods露
- __init__(parent: QObject = None)
Creates a new QVideoProbe class with parent. After setting the source to monitor with setSource(), the videoFrameProbed signal will be emitted when video frames are flowing in the source media object.
- isActive() → bool
Returns true if this probe is monitoring something, or false otherwise.
The source being monitored does not need to be active.
- setSource(QMediaObject) → bool
Sets the media object to monitor to source.
If 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.
- setSource(QMediaRecorder) → 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.
