In our firmware you always need to login and use the video camera. If you don’t want to login, please try to get a mjpg-streamer from openwrt directly and install it to the router. You need to get the correct ipk file for your model. For example, if you have AR150, you need to find mjgp-streamer-xxx.ipk for ar71xx. If you have MT300A or MT300N, you need to find the ipk for ramips.
Upload to the router and install using “opkg install xxxx.ipk”