Windows 7 has seen an improvement in the media side as it adds support for H.264, Xvid, and DivX. This support was added by Microsoft so that most of the media files downloaded from the internet could be easily played using Windows Media Player without the user having the need to install additional codecs or another media player. Although this addition seems to cover support for the most downloaded media from internet, there are still many more formats which are not natively supported by Windows 7. » Read more: Download Windows 7 Codecs