pouët.net

Well I was thinking of the following (maybe somebody has done it):

What if you took a demo (an animation) and rendered a single image so that:

the first line in the image is the first line of the demo on frame #1
the second line is the second line of the demo on frame #2
etc etc. once you get to the bottom line of the frame you go back to line 1.

Lets say that you do that on a constant framerate of about 20. On a 5 minute demo running at 640x480 resolution that would give you a total of 5*60*20=6000 lines. So your end picture would be 640x6000.

How would it look like ? I don't know.. would it look like a random slitscan or something that makes sense (as different scenes have different ambience). What about demos that have an object rotation in the center ?


If anyone does one let us have a look !

n.

I'm pretty sure it'll look like a sequence of ruber-vector (think discloned remix) images.

Navis : it would look like the good old rubber effect, popular in the early 90's on Amiga and Atari, usually done on 1 or 2 bitplanes 3D objects.

sync music to skipping frames, most original concept award. oh damn now its no longer original!

I think what you describe is "slit scanning":

http://www.vimeo.com/438009

parapete: read the 5th paragraph again ;)
let me help you

Could be good to try vertical lines too.
I think that the pictures may look interesting, but depending on the movement of the objects in the demo.
I did something similar with video (in 1993 or so) and an old videodigitizer for Amiga called DigiView.

I had a slit scan plugin thingy around here. I could try it with a demo if I knew where I found it.

xernobyl, yeh I should have prepended my post with 'tl;dr'.

Maybe kkapture could have an option added for this kind of thing?

meh i just implemented it in my opengl capture lib. the results are a bit underwhelming to say the least.

...or one could just do it as a post-process, and keep kkapture bloat-free ;)

Ok it seems to work. http://graphics.tudelft.nl/~jorik/slitscan.png is the start of http://pouet.net/prod.php?which=50691 (grand central).

so there.

this is uber cool

Nice! that could be a kkapture option :)

I like the idea. It's like a visual ID of the totality of a demo, intense parts, stil parts, long boring vs short parts, etc, etc. I liked it so much that I wrote some code to try it out and it's funny :P

Haha, cool! :)

The slits need not be linear either. Could be curved or warped in various ways ;)

Navis: it's basically the effect I was talking about back in Madrid but with a slight modification. If you'll try to do it by displaying the current frame. The best visualisation of this effect I found is here:

http://youtube.com/watch?v=XYJEKh9OqEY

slit scanner is daughter of twisted sister.

Reminds me about this MFX demo: http://pouet.net/prod.php?which=8990

As far as I remember, then there's a scene where they buffer up 50 frames, then use the blue channel of each pixel to decide which frame that the pixel should read from.

bonzaj: Yes. I remembered this when I got your email earlier this morning about football ;-)

It reminds me of Morphovision by Toshio Iwai.

Video:
http://www.nhk.or.jp/strl/morphovision/swf_e.html

Images:
http://www.nhk.or.jp/strl/morphovision/image_index.html

that morphovision thing is absolutely awesome!

wow (morphovision)