If you have ever wondered what the different types of video formats there are then this should solve that question. Some video formats are better than others and you will need to decide what quality of movie you want as the file size and compression ratios differ.
Uninstall/Install DLL and AX codec/filters
If you wish to install or uninstall the DLL and AX codecs then the guide below will show you how to do this. This is mainly for a Windows 7 system but you should be able to do this on all operating systems including Windows 10.