Hi Rob,
I can’t see your video, however I have seen hedgehogs regularly do this on camera and while observing in person. Interestingly I have seen both male and female hedgehogs do it and it does look a lot like scent marking. They like to do it on my gravel paths and stone patio. They will lower their chins and drag themselves along but only for a few moments.
In the hotter months I have seen them do similar where they will flatten themselves completely with their legs outstretched for a minute or two – this is to help them cool down and I believe I have seen some people call it ‘splatting’ or ‘pancaking’.
