It's not open source but used Axis cameras are pretty cheap and have rtsp and onvif support. Those mostly come from commercial installs and can be configured offline using a web interface.
It's not open source but used Axis cameras are pretty cheap and have rtsp and onvif support. Those mostly come from commercial installs and can be configured offline using a web interface.
Axis cameras are great. Their product support is awful.
For used cameras I don't expect to get any form of official support. IMO their documentation is clear and they provide software updates for 7 years.