Yes, well mostly. Zoneminder handles nearly everything. Technically there is some code inside the cameras to be IP cams, so it's not 100% FOSS, but using different cameras could solve that.
https://media.tenor.com/IdpX8cVT__4AAAAC/pepo-g-peepo.gif
Zoneminder is pretty good stuff
Wen zoneminder @Zapstore
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Raspberry pi cameras