I am confident in saying that at one point in our tech lives we would open a media file and it would not play whether it be on a personal computer or some kind of media player. There are many solutions out there but many are limited in some form and/or require some kind of monetary fee. I have tried several converters many were limited in conversion types and the best ones were free to try but were costly. BUT as always there is a free alternative!!
SUPER by ERightsoft
Provides all the neccessary to convert over 90% of files to a file of your choice. I have also made gif from videos with this software.
Although what may prove to be an obstacle for you if your a regular pc user, whom utilizes the computer for just web, e-mail, and basic media use. The reason is because I feel the interface is difficult to figure out for those first timers out there and non power users.
The program WILL require some playing around with the options to get the best quality conversion possible. I say its definitely a must for those media users that like to share media through various file mediums for example convert a video that will play on iPod converted from and original format that is not supported by the iPod.
SUPER ERight Softwebsite
http://www.erightsoft.com/SUPER.html