That's the sort of thing I'm going to do, but manually searching through 10 hours of footage for5 every night's recording is going to be - well- 10 ours of daytime work. Too make things easier, I need to have a programme that detects sudden incursions of light then marks the video or clips it at5 that point.
I'm working with Movavi right now and I think I may have it sorted somewhat.
The original video recording didn't see any scene changes to mark, however I've messed around with the image settings, ie brightness, contrast etc, and some scenes where thye light kicks in are now found and marked.
I'll do a bit more on that and see what comes of it.
Thanks for the comments