Installing an specified codec individually every now and then can be cumbersome. Sometimes your media player might not play the required file format, in such cases you can download a collection of codec together that are usually termed as codec packs, these are usually one-time install package which is free – One such available codec is Vista codec pack.
Just like k-lite codec, Vista Codec pack plays all media format extension and is specially built for Windows Vista system but it also holds good with Windows XP platform.
Whether it is an audio, video format such as MKV, MP4, MOV, OGG or other formats that you want to play on your Windows vista platform, Vista Codec pack is for you.
It’s free, also available in 32 bit, 64 bit windows form. This Vista Codec pack is from Shark which is of course free to download (size is around 20mb)