App for streaming from network drive to Apple TV?

I'm looking for an app that can do several things. There are apps that I've downloaded and paid for >:-( that do one or even tow of these things, but I want to:

Stream movies (of different file types) from a network drive (WD MyBookLive) to Apple TV, via an iPad.

There are apps that will stream any filetype from a Mac to apple TV, but they need certain server software running on the Mac, so no good for me with my network drive.

There are also apps that will play any filetype on an iPad, streamed from a network drive. But these won't stream to Apple TV.

Is there something that does both, that doesn't require special software on the drive?

Thanks!