This is an application that I made myself but I am in no way self promoting it. It's called Ultimate Video Converter and as you can guess it is a video converter. I have been a avid follower of PortableApps.com for quite some time and I decided that it would be a good idea to release the application as a PortableApps.com 2.0 Installer as I have not seen any video converters released on the website. The application is programmed in .NET (which I realise can never be truly portable, but oh well!). It is released under the GPLv3 and is hosted on SourceForge. You need to have .NET Framework 4.0 installed on your computer which you can get from here.
Here is a link to it:
Ultimate Video Converter Portable 126.96.36.199 Beta 3
The source for the application can be found here:
Ultimate Video Converter Source
Updated to latest PortableApps.com Installer
Updated to latest PortableApps.com Format
Improved help file
Improved PortableApps.com Format
Hope you like it!