[Coco] CoCoFEST! 2009 256-color slideshow (now dithered!)

[Gene Heskett]

On Sunday 10 January 2010, Joel Ewy wrote:
>Gene Heskett wrote:
>> On Sunday 10 January 2010, Joel Ewy wrote:
>>> John W. Linville wrote:
>>>> So I learned how to dither images.  Now my 256-color slideshow looks
>>>> a lot better...
>>>>
>>>> 	http://www.youtube.com/watch?v=Tm9yB3xVfbs
>>>>
>>>> Enjoy!
>>>>
>>>> John
>>>
>>> That looks really good, John.  The dithering really does help.
>>>
>>> JCE
>>
>> Is the flickering border part of this 256 color mode, or do I have a
>> viewer problem?
>
>The flickering border is not intrinsic to the 256 color mode.  John must
>have put that in there for fun, or to demonstrate that the CoCo can do
>other things while displaying pictures in this mode, because it is a
>single, ordinary 640x200 screen, with no palette switching or anything
>else.  All the colors are artifact colors in the manner of the old PMODE
>4.  FWIW, my slideshow doesn't do anything with the borders, and 'view'
>just makes them black.
>
I get a fairly clear picture for about 15 seconds of each new pix, then the 
flickering border starts, flashing all colors of the rainbow, while random 
sections of the image dance a pixel or so in random directions for the final 
15 seconds or so.  This is on linux, and I have NDI what decoder is actually 
in use when I'm watching these.

-- 
Cheers, Gene
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