grab frame NTSCtoUSB dongle, opencv2, python wrapper

Question

Context:

I have been playing around with python\'s wrapper for opencv2. I wanted to play with a few ideas and use a wide angle camera similar to \'rear view\' came

Answer 1

It's a few months late, but might be useful. I was working on a Windows computer and had installed the drivers that came with the device, I tried the same code as your question with an Ezcap from Somagic and got the same error. Since "frame is None," I decided to try an if statement around it - in case it was an initialization error. Placing into the loop:

if frame is None:
    print 0
else:
    print 1

The result is: 01110111111111111111111111111...

And if the frame = cap.read(), above the loop is commented out - I get: 00111111111111111...

So for my device capture device it appears to be working for all frames beyond the 5th are captured. I'm not sure why this is, but it might be a useful work around for now.

Disclaimer: Unfortunately, my camera input is currently in a radiation field so I can't get to it for a couple of weeks to make sure it works for sure. However, the images are currently a black frame (which is expected without proper input).