I have developed a digital video recorder and streamer that also detects movement and audio. It has been in the works for about 4 years now and I'm super proud that it actually gets usable now! A friend of mine helped with the web-interface. It is targetted at Linux, but it may work on other unixes; I did not try that yet. I love to hear feedback. If you would like to see certain new features or things that need improvement; let me know!

https://vanheusden.com/constatus/

really nice project used in many hackerspace as alternative to motion which uses a lot less CPU power for a lot MORE features! check it out if you like this kinda stuff