Seg Fault while calling cv2 from Julia using PyCall

Code

```
cap = cv2[:VideoCapture](path)
ret, frame = cap[:read]()
cv2[:waitKey](1)
cv2[:imshow]("Video",frame)
```

Error on Terminal
```
init done
opengl support available

signal (11): Segmentation fault
while loading /home/karan/Desktop/Julia_Benchmarks/Harris_Corner/harris_main.jl, in expression starting on line 34
unknown function (ip: 0x7f78a6b1e51d)
Allocations: 23870129 (Pool: 23869084; Big: 1045); GC: 17
Segmentation fault (core dumped)

```

Reproduce the crash from the cv2 VideoCapture, read, waitKey, and imshow sequence in harris_main.jl at line 34. Start by isolating which call triggers the segmentation fault, then compare the behavior with the Julia, PyCall, Python, and OpenCV setup; done means identifying a reproducible cause and a verified fix or documented incompatibility.

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