DVR-Scan is a cross-platform command-line (CLI) application
that automatically detects motion events in video files
(e.g. security camera footage). In addition to locating both
the time and duration of each motion event, DVR-Scan will save
the footage of each motion event to a new, separate video clip.

Not only is DVR-Scan free and open-source software (FOSS),
written in Python, and based on Numpy and OpenCV, it was built
to be extendable and hackable.

For users wanting finer control over the output video encoding
method, the default timecode format (HH:MM:SS.nnnn) is compatible
with most popular video tools, so in most cases the motion events
DVR-Scan finds can be simply copied and pasted into another tool
of your choice (e.g. ffmpeg, avconv or the mkvtoolnix suite).