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                                            ucool

`VideoCapture.Open()` is significantly slower on x64 as compared to x86.

> It seems to be this issue [opencv/opencv#17687](https://github.com/opencv/opencv/issues/17687) Adding `Environment.SetEnvironmentVariable("OPENCV_VIDEOIO_MSMF_ENABLE_HW_TRANSFORMS", "0");` will fix it. Using `VideoCapturesAPIs.DSHOW` also works but it gave me a much choppier stream It work!