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54 lines
1.2 KiB
54 lines
1.2 KiB
3 months ago
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# import the opencv library
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import cv2
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# define a video capture object
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camera = cv2.VideoCapture(0)
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camera.set(cv2.CAP_PROP_FPS, 20.0)
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if not camera.isOpened():
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print("Cannot open camera")
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exit()
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queue = [(False, None)] * 100
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# Define the codec and create VideoWriter object
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fourcc = cv2.VideoWriter_fourcc(*'mp4v')
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#out = cv2.VideoWriter('output.mp4', fourcc, 20.0, (int(camera.get(3)),int(camera.get(4))))
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idx = 0
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offset = 0
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while(True):
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# Capture the video frame
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# by frame
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ret, frame = camera.read()
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frame = cv2.flip(frame, 1)
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#recod the frame
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#out.write(frame)
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queue[idx] = ret, frame
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showo, fr = queue[(idx - offset) % len(queue)]
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if showo:
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cv2.imshow('vid', fr)
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# the 'q' button is set as the quitting button you may use any desired button of your choice
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key = cv2.waitKey(1) & 0xFF
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if key == ord('q'):
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break
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if key == ord('a'):
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offset += 1
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if key == ord('d'):
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offset -= 1
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idx = (idx + 1) % len(queue)
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# After the loop release the cap object
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camera.release()
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#out.release()
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# Destroy all the windows
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cv2.destroyAllWindows()
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