Python OpenCV - Update camera index of live webcam view -

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i viewing webcam camera live feed. incorporate tkinter gui , have dropdown selection allows 1 change camera index, , therefore webcam being used, on fly. how can achieved?

example code:

import cv2  def show_webcam(mirror=false):     cam = cv2.videocapture(0)     while true:         ret_val, img = cam.read()         if mirror:              img = cv2.flip(img, 1)         cv2.imshow('my webcam', img)         if cv2.waitkey(1) == 27:              break  # esc quit     cv2.destroyallwindows()  def main():     show_webcam(mirror=true)  if __name__ == '__main__':     main()

to change camera @ run time need change index pass in cv2.videocapture(index).

find out how many camera using app , 3 cameras, can change through changing index 0 or 1 or 2.

add 1 more parameter index show_webcam(mirror=true, index)

in function side can use this

def show_webcam(mirror=false,index): cam = cv2.videocapture(index) while true: ret_val, img = cam.read() if mirror: img = cv2.flip(img, 1) cv2.imshow('my webcam', img) if cv2.waitkey(1) == 27: break # esc quit cv2.destroyallwindows()


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