A small library to extract segments of CCTV footage with motion.
After downloading the code, you can install and run the package with:
$ pipenv install
$ pipenv shell
$ extract-motion ...Note that by default, this will re-encode the parts with motion with HEVC (using GPU acceleration) though the default arguments are for FFMPEG running on Linux. These will need to be adjusted.
usage: extract-motion [-h] [-b BACKGROUND] [-m MASK] [--history HISTORY] [-s] [-v] video
positional arguments:
video Path to the video file
optional arguments:
-h, --help show this help message and exit
-b BACKGROUND, --background BACKGROUND
reference background image
-m MASK, --mask MASK Bounds of rectangle to ignore, specified as 'x1,x2,y1,y2'
--history HISTORY
-s, --show Show the stream
-v, --verbose
This uses a weighted moving average of the previous images in order to determine whether there has been any change. When changes are detected, the previous and next 2 seconds are included and then everything is exported to a new file.