How to open camera with pygame in Windows?

Question

I want to open the camera with Python using the pygame module on a Windows 7 machine, but it's not working. I have previously used "/dev/video0" which is the read device in Linux. The pygame documentation just shows how to open a camera device in Linux. I am using pygame version 1.9.1 and Python 2.7.

How can I open the camera on a Windows device? When I try my existing script, the error I get is:

File "E:/test_python/open_cam2.py", line 10, in <module>
    cam = pygame.camera.Camera("/dev/video0", (640, 480))
File "C:\Python27\lib\site-packages\pygame_camera_vidcapture.py", line 47, in init
    self.dev = vidcap.new_Dev(device, show_video_window)
TypeError: an integer is required

Answer 1

Try this,

 import pygame.camera
 import pygame.image
 import sys

 pygame.camera.init()

 cameras = pygame.camera.list_cameras()

 print "Using camera %s ..." % cameras[0]

 webcam = pygame.camera.Camera(cameras[0])

 webcam.start()

 # grab first frame
 img = webcam.get_image()

 WIDTH = img.get_width()
 HEIGHT = img.get_height()

 screen = pygame.display.set_mode( ( WIDTH, HEIGHT ) )
 pygame.display.set_caption("pyGame Camera View")

 while True :
     for e in pygame.event.get() :
         if e.type == pygame.QUIT :
             sys.exit()

     # draw frame
     screen.blit(img, (0,0))
     pygame.display.flip()
     # grab next frame    
     img = webcam.get_image()