Bob Currier (rcurrier@synthetic-ap.com)
Wed, 16 Jun 1999 01:13:55 -0700
On 15 Jun 1999 15:49:27, steve.olson@dxrgroup.com (Steve Olson, DxR
Development Group) wrote:
>I was not overly pleased to hear about the QT4 release 10 days before one of
>our major products shipped (I knew there was a beta, but I don't like to work
>with beta products). I was even less pleased to hear we would HAVE to use it
>and ship it with our program. Then I looked at the compressed movies in our
>Director projects using QT4 :@ and realized I was in much hotter water than I
>really prefer. The color of the movies is darker than it should be.
If you're developing commerical product, you really *have* to get
yourself on the beta list. Otherwise nasty surprises happen. There was a
warning from Apple at least a month ago--on both the private beta and
public QT lists--about the need to get QT 3.0 licenses then because 4.0
was soon to be the only option. But you don't want to hear this now...
>We had this problem before with QT3, and we were able to fix it by turning
>off
>the ATI video memory manager. I've turned off every QT extention I have that
>will still allow the movies to play, and I haven't been able to get the color
>to return to its normal state.
As a guess, Apple supposedly fixed the problem with gamma and the ATI
drivers in QT4 and 8.6. By disabling the ATI software you may be causing
the problem to reappear by disabling the fix. Try running "stock"
software under 8.6.
Another idea: I'm told that the OpenGL installer from Apple also includes
updated ATI drivers that fix some problems. You might want to try those,
and if they fix your problem, see if you can license them for
redistribution. You can find it at
<ftp://ftp.apple.com/developer/opengl/opengl_install.hqx>.
Since the acceleration (video overlay) that changes the gamma only
happens in the frontmost, unobscured window, you can test to be certain
that video acceleration is the culprit by placing another window slightly
overlapping your video window, or by turning off "direct to stage" in
Director. Neither are real solutions, but will at least prove you're on
the right track.
-----
Bob Currier rcurrier@synthetic-ap.com
Synthetic Aperture voice: +1 949 493-3444
http://www.synthetic-ap.com/ fax: +1 949 203-2108
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