How to automatically speed up the part of the video where nothing is happening?

Question

Video processing

There has been a theft.
There are many hours of video from intercoms.
Is it possible to automatically speed up those parts of the video where nothing happens (to reduce the time for viewing / screenshotting faces)?

Answer 1

Make automatic screenshots every N minutes.
Arrange screenshots by file size, I think there will be differences up or down.
If you see for yourself, then ace player can speed up viewing up to 30 times

Answer 2

It seems that VLC has such a filter
askubuntu.com/questions/422341/how-can-i-detect-mo...