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Forums > CSDb Discussions > Adding screenshots for interlaced pictures - the proper way!
2008-03-25 18:50
null
Account closed

Registered: Jun 2006
Posts: 645
Adding screenshots for interlaced pictures - the proper way!

1) load picture in vice.
2) set maximum emulation speed to 10%
3) take 2 different screenshots
4) ???
5) profit!


the result is somehting like this:



( sure, it's not perfect, but at least it doesn't fool people because there are 2 blended images )


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http://zomgwtfbbq.info
 
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2008-03-25 20:42
gregg
Account closed

Registered: Apr 2005
Posts: 56
I like Sorex' flash thingie, but I don't like flash. ;)
Now if it would only be possible to export images out of Vice with PAL emulation applied to them...
2008-03-25 20:49
Hein

Registered: Apr 2004
Posts: 948
Knoeki, that looks like they cut the budget on animation frames, like the usual cheap Manga crap. But if you want to add such screenshot for your own releases, sure.
2008-03-25 22:27
null
Account closed

Registered: Jun 2006
Posts: 645
as said, it was just an idea. I must say in flash it looks much better.

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http://zomgwtfbbq.info
2008-03-25 22:31
Zyron

Registered: Jan 2002
Posts: 2381
Knoeki's animated gif flashes more than Sorex' flash-thingy. :)
2008-03-25 22:40
jailbird

Registered: Dec 2001
Posts: 1578
Oh noes. Please don't make another of those ultra-boring threads about screenshots and flickering and stuff.

1st rule: you do not complain about the flickering as long you're emulating it.

2nd rule: you DO NOT complain about the flickering as long you're emulating it.

3rd rule: you use a god damn Commodore 64 and forget about emulation and screenshots

kthnxbye

:)

PS for Knoeki: that gif anim is SCHEISSE!
2008-03-25 23:23
assiduous
Account closed

Registered: Jun 2007
Posts: 343
Jailbird its not emulators fault,its the LCD/CRT monitor displaying at a frame rate other than 50FPS that fucks it up:) the emulated flicker is the same,connect your PC to a PAL TV via TV out on your gfx card and you wont be able to tell the difference. other than that i agree
2008-03-26 00:22
gregg
Account closed

Registered: Apr 2005
Posts: 56
It would work A LOT better if todays LCD screens would actually support higher refresh rates, 75 Hz and up. A real pity that almost none do.
2008-03-26 08:18
MagerValp

Registered: Dec 2001
Posts: 1074
It'd be even better if they all supported 50 Hz, or even 50.12...

A blended shot is much better than trying to emulate C64 interlace with animgifs or flash crap. It'll never look right on a VGA or LCD monitor, as they are physically different from an old 15 kHz monitor, and you don't get a stable 50.12 Hz animation.

If you want to visualize the flicker, the closest you can get is a 60/40 blend of the two frames, but it takes several minutes to create a screenshot like that.



It still doesn't look very close to the real thing, and it never will. So stop bitching about screenshots and look at the releases on a real C64.
2008-03-26 11:18
Mace

Registered: May 2002
Posts: 1799
For me, the only proper way of adding screenshots of interlaced pictures is to grab the two frames and blend them 50%/50%.
This results in a wonderfully coloured picture that is easy on the eyes.

Interlacing is a method, not a goal.
So when possible, revert to the static blended picture.

And get proper software to do it.
2008-03-26 11:23
Sorex
Account closed

Registered: Nov 2003
Posts: 43
there's no reason to become rude on this topic.

more than a decade ago I was the first who posted IFLI pictures in 136 colored images on my old site.
(routine ate funpaint2/Gunpaint & RAW picture data)

why?

emulators couldn't even deal with those special modes at that time (time of C64S & Power64 or something), so people who had interest into c64 gfx compo's couldn't see what they wanted when they didn't own a real machine.

the merged one is the best but doesn't really represent how good or bad it flickers on a real one when it isn't dithered to prevent flickering (the source picture that is).


ofcoz it's better to see them on a real machine but not everyone has that option or time to transfer it all.
so I/we just came up with options to bypass those problems.
If people didn't care about such options then there wouldn't be any emulators either which would be a great loss in c64(/and other) interest for sure.
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