i have an app on my iPhone called "Mini Webcam" and it broadcasts the camera, all you have to do is enter the IP address it shows, on your computer, ipad etc on the same network to see the broadcast, and you can select different levels of quality , the lowest quality, gives very little lag. and it's free. so worth a try.
i like to use it as a lookout when i'm expecting a delivery.
and before you say anything, no i am not the developer, nor affiliated with the app in any way lol