Purevideo

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PureVideo is a technology introduced by Nvidia in GeForce 6, 7, 8 and 9. GeForce 9 Series, NVIDIA GeForce 8 Series, and GeForce 9 Series.

General information PureVideo is a marketing term for a collection of several hardware techniques that support the three main streams of video processing: image decoding, decompressed frame processing, and on-screen processing. Stage of image decoding

Decoding MPEG-1/2 and WMV9 streams using Motion Compensation (MC) and Inverse Discrete Cosinus Transform (IDCT) codecs, which are essential computational processes for decompression of digital video of all formats. Stage of decompressed frame processing

Spatial-Temporal De-Interlacing, four or five scaling of the image, increasing or decreasing the number of frames displayed on the screen compared to the original speed of the video - algorithms 3: 2, 2: 2 pulldown also called Telescine) and Inverse Telescine - and Bad Edit Correction. Modes of the so-called. The 3: 2 and 2: 2 frame rates allow you to change the playback speed of a movie from PAL (25 fps) or 30 fps (NTSC) to movie speed (24 fps). Inverse Telescine works in the opposite direction. In turn, the Bad Edit Correction process is designed to remove any errors caused by the use of pulldown and Inverse Telescope filters. Stage of image display on screen

Convert color from YUV color television to RGB and color correction. When sending the processed image to the screen (overlay mode), you can adjust the color temperature and correct the gamma curve. Advantages of PureVideo

Unfortunately, this technology is used in very few programs, which is not very popular, and a license fee (including a PureVideo decoder) must be paid for the use of purevideo.

PureVideo technology is based on DirectX 9.0 technology, so decoding works well with ATI cards.

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