What is ffdshow?
Typical installation path: C:\Program Files\k-lite codec pack\ffdshow\
Description from the publisher“ffdshow is DirectShow and VFW codec for decoding/encoding many video and audio formats, including DivX and XviD movies using libavcodec, xvid and other opensourced libraries with a rich set of postprocessing filters. ”
Publisher about URL: http://sourceforge.net/projects/ffdshow/
How to Automatically Uninstall ffdshow (with Boost)
If you you do not have Boost installed yet, download Boost and enjoy your PC.
Open Boost by either double-clicking the Boost icon 
in your notification area next to your PC's clock, or single-clicking the Boost icon and clicking the Open Boost button on the top left of the Boost notification window.
If you are not currently on the My PC screen of the main Boost window, click the My PC tab.
Click the Optimize programs button 
, this will launch the Program Optimization screen.
Locate the program in the list called ffdshow . (The program could be listed under any of the section such as Uninstall Recommended, Possible Uninstall, etc. based on how well ffdshow performs on your PC.)
ffdshow
To the right of the list item, click the Uninstall 
button and Boost will completely remove ffdshow from your PC.
How to Manually Uninstall ffdshow (with Windows)
Use Add/Remove Programs control panel in Windows makes to uninstall ffdshow. Follow the appropriate instructions below to use this control panel.
Windows 7
From the Start menu, select Control Panel.
In Large or Small icon view, click Programs and Features. If you're using Category view, under "Programs", click Uninstall a program.
Select ffdshow from the list of programs, and click Uninstall. Alternatively, right-click the program and select Uninstall.
Windows Vista
From the Start menu, select Control Panel.
In Classic View, double-click Programs and Features. In Control Panel Home view, under "Programs", click Uninstall a program.
Select ffdshow from the program list, and click Uninstall. Alternatively, right-click the program and select Uninstall.
Windows XP
From the Start menu, select Control Panel.
Click the Add or Remove Programs icon.
Select ffdshow from the list of programs and click Remove.