I've written a simple script to continuously capture snapshots from my webcam. My only issue is the videocapture module doesn't always grab an image which in turn crashes the program. I think I could solve this by using an infinite loop but I'm not real certain how to go about it. Here's the script:
from VideoCapture import Device
import datetime
def capt():
a = datetime.datetime.now().strftime("%Y%m%dT%H%M%S%ms")
b = str(a)
cam = Device(devnum=0)
cam.setResolution(1280, 960)
cam.saveSnapshot('%s.png' % (b))
for i in range(1, 100000):
capt()
Try to use cam.getImage
instead of cam.saveSnapshot
. cam.getImage
returns PIL image, thus you are able to determine whether any frame has been actually grabbed or not. The folloing code hasnt been tested:
from VideoCapture import Device
import datetime
def capt():
a = datetime.datetime.now().strftime("%Y%m%dT%H%M%S%ms")
b = str(a)
cam = Device(devnum=0)
cam.setResolution(1280, 960)
return cam.getImage(), b
while True:
im, b = capt()
if im:
break
im.save('%s.png' % (b), 'JPEG')
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