List available camera resolutions

Xav12358

Hello,
I try to find on python a solution to get all available resolutions on my camera
I find many example but nothing work. I use Pyside2 on python 3.6 on Ubuntu 18.04.

Here is the code I tried:

from PySide2 import QtCore
from PySide2 import QtGui
from PySide2.QtWidgets import QApplication, QMainWindow
from PySide2.QtCore import *
from PySide2 import QtWidgets, QtMultimedia

....

cameras = QtMultimedia.QCamera.availableDevices()
for camera in cameras:
          print(" -- camera {0}".format(camera))
          i = QtMultimedia.QCamera(camera)
          j = QtMultimedia.QCameraImageCapture(i)
          resolution_list = QtMultimedia.QCamera.supportedViewfinderResolutions(i) ### Empty

Can someone help me ?

SGaist

Hi,

Based on the documentation you are doing two things wrong:

it's an object and not a class method
you are not ensuring that the camera is in the Loaded state as required.

Volodymyr14

Try this:

import os
from PySide2 import QtMultimedia, QtMultimediaWidgets
from PySide2 import QtWidgets, QtCore, QtGui

class UMedia(QtMultimediaWidgets.QCameraViewfinder):
    
    def __init__(self, parent=None):
        super(UMedia, self).__init__(parent)
        self.setWindowTitle("U Camera") 
        self.setWindowOpacity(0.95)
        self.camera = QtMultimedia.QCamera()
        self.camera.setViewfinder(self)
        self.camera.start()
        self.cambut1 = QtWidgets.QPushButton(self)
        self.cambut1.setText("Capture") 
        self.cambut1.setVisible(False)
        self.cambut1.clicked.connect(self.img_capture)
        self.vc_grid = QtWidgets.QGridLayout()
        self.vc_grid.addWidget(self.cambut1, 0, 0, 1, 1)
        self.vc_grid.setAlignment(QtCore.Qt.AlignTop)
        self.setLayout(self.vc_grid) 
    
    def img_capture(self):
        image_capture = QtMultimedia.QCameraImageCapture(self.camera)
        image_capture.setCaptureDestination(
                QtMultimedia.QCameraImageCapture.CaptureToFile)
        self.camera.setCaptureMode(QtMultimedia.QCamera.CaptureStillImage)
        filename = os.path.dirname(os.path.abspath(__file__))
        camera_path = os.path.join(filename, "camera/captures/")
        image_capture.capture(os.path.normpath(camera_path))

    def enterEvent(self, event):
        self.cambut1.setVisible(True)
    
    def leaveEvent(self, event):
        self.cambut1.setVisible(False)


if __name__ == "__main__": 
    import sys
    app = QtWidgets.QApplication(sys.argv) 
    uap_vc = UMedia() 
    uap_vc.show() 
    sys.exit(app.exec_())