About a year ago I saw a music video using this very cool effect. I've always wanted to play with it and was reminded to do so after watching adam deeves' video on time displacement ( vimeo.com/409951 ).
Instead of using After Effects, I decided to see if it was possible to recreate the slit-scan video effect in Flash using my web cam. The video above is the end result and works even better than I hoped.
I'm going to be putting this online soon so everyone who has a web cam can play with it.
this video consists of the first experiments with diachronic blending – developed in processing http://www.processing.org -, by pedro veneroso http://www.marginaliaproject.com. this particular video is composed of four different manipulations of the same video sequence and represents the first test of the software.
the diachronic blending effect consists of merging frames on a time progression using a set of different merging techniques blending an array of frames individually each time the screen is rendered. the outcome is a fluid and distorted succession of images that vaguely document the way in which movement evolves, while transfiguring both actions and forms into mutable and organic shapes.
furthermore, for this particular video a 'blur' class was created to implement randomly generated blur to each frame of the video on an attempt to develop organic-ish forms based on movements of rigid structures. the green gamut was obtained by manipulating individual pixels modifying their colors while keeping luminosity intact. the final image is the result of blending all the aforementioned steps and adding three texture layers manipulated with processing and blended with diverse blend modes to the actual frame [in a photoshop-like manner].
so far the code for the software that will control this effect is still under development; as soon as we have it done we will release both the source code and the software at http://www.marginaliaproject.com
for these experiments we used raw footage of the feature film 'os residentes' [yet to be released], by tiago mata machado. actress simone sales brushing her hair violently.
this experiment was made within the context of marginalia project. more information about it, as well as the source code of this software [soon], can be found at http://www.marginaliaproject.com
Further experiments in slit-scan style video, sometimes called time slicing. I like to think that this is what you might see if you looked at our world from a spot in the fourth dimension. (^_^)
These clips start as normal video clips that I've captured along the Oregon Coast. Then I run 'em through a script that I wrote in Processing.
The script works by taking a vertical sliver of pixels from the source video, advancing the video one frame, grabbing another sliver of pixels, and so on through the entire source clip.
These slivers are then stacked horizontally to create one frame of the final clip. The animation effect is created by advancing the location of the vertical slice and repeating the stacking process.
So each frame of the final clip represents the change over time of a stationary spot. As the video advances, the spot we are seeing moves through space. Normally as a video advances we move through time, so we've sort of swapped the two.
For more info about slit-scan photography and video see: http://flong.com/texts/lists/slit_scan/
Music by Agent Engram