I would like to access my webcam from Python.
I tried using the VideoCapture extension (tutorial), but that didn't work very well for me, I had to work around some problems such as it's a bit slow with resolutions >320x230, and sometimes it returns
OpenCV has support for getting data from a webcam, and it comes with Python wrappers by default, you also need to install
numpy for the OpenCV Python extension (called
cv2) to work.
At the time of writing (January 2015) there is no Python 3 support yet, so you need to use Python 2.
An example copied from Displaying webcam feed using opencv and python:
import cv2 cv2.namedWindow("preview") vc = cv2.VideoCapture(0) if vc.isOpened(): # try to get the first frame rval, frame = vc.read() else: rval = False while rval: cv2.imshow("preview", frame) rval, frame = vc.read() key = cv2.waitKey(20) if key == 27: # exit on ESC break cv2.destroyWindow("preview")