36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
from threading import Thread
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import cv2, time
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class VideoStreamWidget(object):
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# modified from Nathancy: https://stackoverflow.com/a/55131226
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def __init__(self, src=0):
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self.capture = cv2.VideoCapture(src)
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# Start the thread to read frames from the video stream
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self.thread = Thread(target=self.update, args=())
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self.thread.daemon = True
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self.thread.start()
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def update(self):
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# Read the next frame from the stream in a different thread
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while True:
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if self.capture.isOpened():
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(self.status, self.frame) = self.capture.read()
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time.sleep(.01)
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def show_frame(self):
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# Display frames in main program
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cv2.imshow('frame', self.frame)
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key = cv2.waitKey(1)
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if key == ord('q'):
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self.capture.release()
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cv2.destroyAllWindows()
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exit(1)
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if __name__ == '__main__':
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video_stream_widget = VideoStreamWidget(2)
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while True:
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try:
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video_stream_widget.show_frame()
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except AttributeError:
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pass |