The Windows 10 Codec Pack is a free easy to install bundle of codecs/filters/splitters used for playing back movie and music files. After installation you will be able to play 99.9% of files on the internet, along with VCD's, SVCD's and DVD's. Also included in the package are a number of encoder codec's, allowing you to encode files in formats such as DivX. XviD, x264 and many more in your favourite encoding application.