I have been investigating automated video editing and a clever friend managed to make a system using AVFoundation. At the moment it just applies edits from an XML- I will push him to put it here as an addon. In the meantime I came across this
What we ended up with was only OSX but this looks like a powerful cross platform solution. I dont have any need to get it going but I thought I would put it here in case someone is looking for a solution.