camgrab 0.8.1

Adding a custom image handler

Grab an image every 5 seconds and it to a custom callable, without saving it, and print the image’s dimensions.

from camgrab import Grabber

url = 'http://62.163.242.211:8080/out.jpg'


def print_dimensions(im, **meta):
    width, height = im.size
    print('{width} pixels wide, {height} pixels high!'.format(width=width, height=height))

grabber = Grabber(url, every=5, send_to_callable=print_dimensions)
grabber.save = False
grabber.begin()

Take control of the main loop

As the main loop created by the begin() method is unthreaded, provides no output, has a static delay between grab attempts, etc. it might be too simple for your needs.

To get around this, simply call the tick() method within your own loop:

from random import random
from time import sleep

from camgrab import Grabber

url = 'http://62.163.242.211:8080/out.jpg'
grabber = Grabber(url)

while True:
    grabber.tick()

    # Wait somewhere between 0 and 10 seconds
    sleep(random() * 10)