Here you can download a fully functional test version of the best tool for reformattng ultra-wide and fisheye video for a more natural look -- Panini-Video.   
This Win32 beta4 version is licensed at no cost for an unlimited period.

I can also build it for Mac OSX, please inquire.
User Guide Windows Installer
Release Notes
We hope you will show your interest in Panini-Video by joining the Panini support group.

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Panini-Video needs a modern computer with a fast CPU, at least 3 GB RAM, and a graphics card with 250MB of video RAM. Your video driver must support OpenGL version 2.1/DirectX 9 or better.  
OS should be Windows Vista or later,  or Mac OS 10.4 or later.

Panini-Video is copyright 2012 Thomas Kite Sharpless, all rights reserved.