Whenever and wherever you need a complete codec, you can use K-Lite Codec Pack. In the end you will be able to play media files without any inconveniences.
If you are a basic user, avoid the advanced mode and trust the program’s default options. You will be amazed by the complexity and the configuration options of these applications starting with installation process, when you have the possibility to choose the settings for each and every codec. It offers support for 32-bit and 64-bit codecs and it works irreproachably.