For low-bandwidth updates every 1-2 seconds:
http://<axis-ip>/axis-cgi/jpg/image.cgi?resolution=640x480
If you own or manage Axis cameras, follow these steps to ensure they never appear in a search for intitle:"live view" axis. intitle+live+view+axis
Axis releases frequent security patches. Log into your camera or use Axis Device Manager to check for: intitle+live+view+axis