I am experimenting with a DIY CCTV system using an old helmet cam. I can leave it running, and then later collect it and download the file to a computer. However hours of footage of the back yard are not exciting viewing, so I'd like something to scan through the files, and let me know where anything eventful happened.

I have found lots of information about Motion, which looks great, but seems to only work with a live video stream. Does anyone know of an equivalent that works with a folder of existing video files?