Video File Joining

[SouthMark35]

Hi All

I was wondering if there was a way to install any product that would join to video files together that could be installed on the NAS? I currently have SABnzb running on my diskstation but when I download some movies they are in 2 files rather than one which means I have to copy them off the NAS and then use my laptop and VirtualDub to join the files which is a bit of a pain!

Would be great if someone has any ideas/solutions to getting round this issue

Thanks

Mark