mirror of
https://github.com/scottlamb/moonfire-nvr.git
synced 2024-12-25 22:55:55 -05:00
36 lines
1.2 KiB
Markdown
36 lines
1.2 KiB
Markdown
|
# Moonfire NVR Signals
|
||
|
|
|
||
|
|
Status: **draft**.
|
||
|
|
|
||
|
|
"Signals" are what Moonfire NVR uses to describe non-video timeseries data
|
||
|
|
such as "was motion detected?" or "what mode was my burglar alarm in?" They are
|
||
|
|
intended to be displayed in the UI with the video scrub bar to aid in finding
|
||
|
|
a relevant portion of video.
|
||
|
|
|
||
|
|
## Objective
|
||
|
|
|
||
|
|
Goals:
|
||
|
|
|
||
|
|
* represent simple results of on-camera and on-NVR motion detection, e.g.:
|
||
|
|
`true`, `false`, or `unknown`.
|
||
|
|
* represent external signals such as burglar alarm state, e.g.:
|
||
|
|
`off`, `stay`, `away`, `alarm`, or `unknown`.
|
||
|
|
|
||
|
|
Non-goals:
|
||
|
|
|
||
|
|
* provide meaningful data when the NVR has inaccurate system time.
|
||
|
|
* support internal state necessary for on-NVR motion detection. (This will
|
||
|
|
be considered separately.)
|
||
|
|
* support fine-grained outputs such as "what are the bounding boxes of all
|
||
|
|
detected faces?", "what cells have motion?", audio volume, or audio
|
||
|
|
spectograms.
|
||
|
|
|
||
|
|
## Overview
|
||
|
|
|
||
|
|
hmm, two ideas:
|
||
|
|
|
||
|
|
* just use timestamps everywhere. allow adding/updating historical data.
|
||
|
|
* only allow updating the current open. initially, just support setting
|
||
|
|
current time. then support extending from a previous request. no ability
|
||
|
|
to fill in while NVR is down.
|