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The problem is that your callback does not terminate. This function is called whenever new data arrives. You however, have in infinite loop within your callback so that you for the qr-code in the first image over an over again. You somehow assume that your cv2_img-variable gets somehow updated. Wouldn't it be extremely inconvenient if one of your variable changes suddenly why you process it?
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The problem is that your callback does not terminate. This function is called whenever new data arrives. You however, have in infinite loop within your callback so that you look for the qr-code in the first image over an over again. You somehow assume that your cv2_img-variable gets somehow updated. Wouldn't it be extremely inconvenient if one of your variable changes suddenly why you process it?
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