python opencv: no image

Question

Hi all,

I am trying to capture from a Sony Handicam DCR-HC38, running the code below, and passing [-1 .. 3] to the CaptureFromCAM function. The code runs, but I get no image. Do I need to "wrap" the camera somehow? Skype recognizes the camera, but python/opencv won't. I'm running Windows Vista if that helps any.

import cv

cv.NamedWindow("camera", 1)

capture = cv.CaptureFromCAM(-1)

while True:
    img = cv.QueryFrame(capture)
    cv.ShowImage("camera", img)
    if cv.WaitKey(10) == 27:
        break