Open video file or a capturing device or a IP video stream for video capturing

cap = cv.VideoCapture()
cap = cv.VideoCapture(index)
cap = cv.VideoCapture(filename)
cap = cv.VideoCapture(..., 'API',apiPreference)

Output

• cap New instance of the VideoCapture

Accepts the same inputs and options as the cv.VideoCapture.open method.

Creates a new video capture instance. With no argument, it connects to the default camera device found in the system. You can specify camera devices by index, an integer value starting from 0. You can also specify a filename to open a video file.