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Video codecs are used in DVD and video CD players and recorders, video broadcast systems, personal computers, and a variety of other applications. In particular, they are widely used in applications that record or transmit video, which may not be feasible with the high data volumes and bandwidths of uncompressed video.
With the release of Windows 8 and Windows 8 Pro, Microsoft made the decision to remove DVD playback, and forego the inclusion of Blu-ray playback. Whereas with Windows 7 you could slot a DVD into your computer and open it in Windows Media Player, that is no longer the case with Windows 8 and Windows 8 Pro. There is a very simple reason for this: The codecs required to play DVDs and Blu-rays â primarily MPEG-2/4 for video and Dolby Digital for audio â cost money.