The frame is split horizontally. The left eye image is placed on top, and the right eye image is on the bottom. This format is often preferred for certain passive 3D TV architectures.
Older active or passive 3D TVs work perfectly with these files.
As he pulled on the sleek, lightweight visor, the lobby dissolved. He wasn't sitting in a velvet chair anymore. He was standing on the deck of a rain-slicked starship orbiting a dying sun.