DVR Feature in Windows® 7
What is the role of DVR in Windows 7?
The DVR is digital video recording. It is an audio and video file container format used for storing the content of TV recorded by Windows 7. In this, the audio and video are encapsulated in an advanced system format container with extension as dvr. Video is encoded using MPEG-2 and the audio using MPEG-1 Layer II. This file formats are created from the stream buffer engine. The DVR of Windows 7 version is Windows Media Center that creates files in that format. If a recording is copy protected, then the dvr file can be only played on recording device. Now the dvr is replaced by the WTV format. Windows 7 can convert non-copy protected WTV files to dvr. This is done using tools such as Andy VT's ToDVRMS. DVR format can be converted to other formats using universal transcoders and also by changing the container format using FFmpeg and VLC media player's transcoding wizard. The role of Windows 7 DVR is that users can transfer the content through wireless network to any device which is also in that network so that they can enjoy their recorded favorites on portable devices. Also, users can watch the saved contents on other mediums such as laptop.
Discussed below are some points that will help users about the requirements of TV tuner card and Windows Media Center of Windows 7:
- Hardware requirements
- Operating system and software requirements
- Windows Media Center
The processor should be a 1.4 GHz Intel Pentium III processor or equivalent to that and the RAM of 256 MB. DirectX 9.0 hardware-accelerated graphics processing unit must be of 64MB of video memory. Graphics which supports this and are compatible with Media Portal like ATI Radeon series 9600 (or above), NVIDIA GeForce 6600 (or above), NVIDIA GeForce FX 5200 (or above) and NVIDIA nForce 6100 series (or above), Intel Extreme Graphics 2 (integrated i865G), Matrox Parhelia, SiS Xabre series. For media portal software, there may have 200 MB free space in hard disk drive. For time shifting purposes, there may be 12GB or more free space in hard disk drive for Hardware Encoding or Digital TV based TV cards.
Operating System and software requirements
The Operating System can be either of Windows XP 32-bit Edition with Service Pack 3 or later, Windows Media Center Edition 2005 with Update Rollup 2 or later, Windows Vista 32 and 64-bit with Service Pack 2 or later or Windows 7 32 and 64-bit. The software requirements are Microsoft .NET Framework 3.5 SP1, DirectX 9.0c, Windows Media Player 11(Windows 7 comes with WMP12).
Windows Media Center comes with a user interface design for the living room TV. It is generally operated using special remote controls and it can also be controlled with a mouse or/and keyboard. Media managed using Windows Media Center can also be connected through a home network to standard TV sets by using Windows Media Center extender.
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