From: Didier Martin (DMartin_at_rtl.be)
Date: Thu Jul 26 2001 - 14:05:00 EDT
Hello All,
I'm new to this list, so I will introduce myself a bit...
I'm a frenchman: so I apologize for my far-from-perfect english... ;-)
I use an A21p/DVD-ROM/256MB RAM/32GB HDD under W2K.
I'm very happy with this machine (after a 4 monthes experience).
However, I found that DVD playback and MPEG-coded video playback in
general suffer from a serious "aliasing" problem ("steps" on the edges
of objects).
This is very visible if you playback at 320x240, and even 640x480: small
objects and text are noticeably affected. (just try it with a sample
.mpg file: look carefully at the edge of objects and text).
We've tried othe DVD players (PowerDVD, WinDVD), and mpeg players (Real,
WMP), but the problem remains and seem intrisic to the video subsystem
or low-level drivers of the a21p.
As I'm used to work on document while looking at videos, DVDs or TV
(thanx to the UXGA+ display and Pinnacle PCTV USB) and this problem is
disappointing: "small" video playback looks very bad.
Other models of Thinkpads we've here (a21m, a20p) do not seem to show
this problem, even if the overall playback quality is similar or lower.
When we disable DirectX acceleration, the problem disappears... But you
can then only display a video at 320x200, at higher res, the playback is
really bad. And DVD simply does not work without DirectX acceleration.
When I display the picture on an external monitor, the problem does not
show (no aliasing at all and near perfect playback).
Is it due to the 1600x1200 LCD, is it a msiconfiguration of the software
(we're using the preloaded Windows 2000 configuration) ?
Are other a21p users experiencing the same problem ?
What do you think could be done to improve the quality of the playback ?
Thank you for your help
Didier Martin
dmartin_at_rtl.be <mailto:dmartin_at_rtl.be>
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