Might catch part of that as follows: If the source video was purely computer originated--not digitally sampled as with camera/telecine video--a laptop should display the full delivered format resolution. A sampled-video signal, say 1080i/p, could be displayed at 1920X1200 providing the vertical resolution was scaled up from 1080 to 1200 horizontal rows. But since the original source was sampled, the effective resolution (resolvable horizontal detail) would be Nyquist limited to about 1700 lines per picture width, and MPEG-2 decoding at typical home-delivery bit rates would further reduce horizontal resolution. Movies, even on 1080 DVDs, could be considerably less, as outlined here , because of 1080/24p master tapes and film prints used and typical filtering/focusing. Oversampling/downconversion (~4k=>2k) should permit nearly full resolution with 1080 DVDs. Effective vertical resolution, whether the source is progressive or interlaced video, is reduced by one-quarter or more from the Kell factor and filtering used to reduce line twitter with interlaced video, which still diminishes laptop or other progressive display resolution. Sorry, not that familiar with the intricacies of HDCP, but thought I'd cover this more theoretical 'full resolution' part as opposed to threatened 1080-DVD analog downscaling to 540p. -- John
|Originally Posted by kapitan|
I have a laptop with 1920x1200 screen and would like to know if PowerDVD HD or WinDVD HD will allow full resolution video on a laptop's screen if graphics doesn't have HDCP. Did anybody get any playback allowed without a HDCP videocard?
I know that absence of ICT flags supposed to allow full rez over analog but I don't know what current software will allow. I am also not sure if laptop's screen is treated as digital "output" that needs to be protected/restricted. Thanks!