I’ve been downloading & watching Movies & playing music since the Internet begun! (I use this one for Windows! K-Lite Codec Pack). It will hopefully load the Codecs for you to watch the movie you want (at least the time this is written. These Codecs seem to switch alot. . . . .
There are four different variants of the K-Lite Codec Pack. Ranging from a very small bundle that contains only the most essential decoders to a large and more comprehensive bundle. The global differences between the variants can be found below. Detailed differences can be found on the comparison of abilities and comparison of contents pages.