Mass creation of thumbnails and nfo.

I have a bunch of videos I know don't have any nfo's already made for them etc.

I would like to have a template of sorts and then perhaps I select which files I want nfo's made for it does it. Basically so it creates that template on all of those files and names it correctly.

I'd also like a way to generate thumbnails of those videos very quickly, maybe at a particular minute marker I want. Anyway to do this?

I also have a few mp4 and avi files that ar like part1 and part2. Is there an easy way to merge them that doesn't require me to pay for a tool.