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Nov 21, 2002, 03:21 AM
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confutatis maledictis
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Overlay
Anybody have any links or information about how overlay works?
Also about any other methods of displaying video . . . older or newer? I suddenly became interested in the subject  thanks
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Digitalis 3.3 Athlon 64 3000 // ASUS K8V SE Deluxe // 1024MB PC3200 (2-2-2-10 1T)
ATI All-In-Wonder 9700 Pro // 20" Dell 2005FPW (DVI) M-Audio Revo 7.1 + Philips Acoustic Edge // Klipsch ProMedia 2.1 320/16 Western Digital WD3200KS + 120/8 Seagate 7200.7 NEC ND-3550A 16x DVD±RW + Lite-On 52x24x CD-RW Antec Sonata case // 480W Antec TruePower personal bests || Aq'3: 46796 | 3D'01: 20461 | 3D'03: 6336 | 3D'05: 2677 | PC'04: 4605 | PC'02: 7691,9092,1250 |
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Nov 21, 2002, 06:48 AM
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#2 |
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DriverHeaven Lover
Join Date: Jul 2002
Location: The Kold North
Posts: 131
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Video overlay enables the display of full-motion video on monitor screen without the constraints of the video BUS speed. The overlay can be either digital (eg. an .AVI-file or DVD-Video) or analog (eg. real-time NTSC or PALvideo from a video captureboard). The analog signal is first decoded to a digital format by the capture board, stored into a frame buffer, and then fed directly to the graphics processor's RAMDAC.
__ When using video overlay the CPU does not have to process any of the video information saving valuable processing power for actual applications. Read also here
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