Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!uunet!portal!cup.portal.com!Classic_-_Concepts
From: Classic_-_Concepts@cup.portal.com
Newsgroups: comp.sys.amiga
Subject: Re: Color Bleeding in Video Titles
Message-ID: <23530@cup.portal.com>
Date: 31 Oct 89 02:46:07 GMT
References: <735@orange9.qtp.ufl.edu>
Distribution: na
Organization: The Portal System (TM)
Lines: 38


 
    Although your problem with color bleeding may be due to a combination
of factors, at the most basic level, you should be aware that:
  
    - red is traditionally a 'difficult' color in video applications and
      is the one most subject to bleed and distortion.
    - the Amiga can output intensities which are too 'high' for video
      applications.  To give an example, on the palette menu of DPaint are
      sliders which go up to 15.  This outputs a signal above the range
      of settings video equipment is accustomed to receiving.  They look
      great on your monitor, but they don't record well. Try lowering them
      to a maximum of about 12 (actually the optimum intensities for each
      color differs, to complicate matters, so experiment).
  
To solve some of these problems, do some test screens where you have red
lettering on a variety of colored backgrounds.  Save them to tape, play
them back and make a note of which combinations help minimize the
problem.  The interaction of colors can create quite a wide variety of
effects.
  
Adjust the intensities, and again make some test tape.  Every hardware
configuration is subject to subtle differences.
  
With the amount of equipment you are interfacing, the problem may lie
elsewhere, but doing the above preliminary adjustments will narrow down
the search and perhaps solve part or all of your problem.  Good luck.
                                                                          
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