Around 3:00 it may be useful to also point out that the command may differ for different routers (networs different) and that most router firmwares can display an overview of devices and IP aswell. Also around 5:30, you can just put in "localhost" instead of the pinecubes IP if your rtmp server is also running on the pinecube. Otherwise cool rewiew and really cool product
Turns out I did something wrong at it is possible to record at higher resolution (I do believe it can do 1080p) and there's a case design that exists, but you have to 3D print it.
Not OP but: as purely a motion detector i would recommend a simple PIR Motion Sensor connected to an ESP8266 or similar wifi-capable microcontroller. If you are using homeassistant as you home automation server, ESPhome is pretty easy to set up with a simple motion sensor. Otherwise you could try writing your own firmware that sends you an email or something