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* time, space, stacking, slicing, scanning, etc
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“Slitscan imaging techniques are used to create static images of time-based phenomena. In traditional film photography, slit scan images are created by exposing film as it slides past a slit-shaped aperture. In the digital realm, thin slices are extracted from a sequence of video frames, and concatenated into a new image.”
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[[http://www.flong.com/texts/lists/slit_scan/ ][An Informal Catalogue of Slit-Scan Video Artworks and Research ]] Compiled by Golan Levin.
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[[slitscope_0.jpeg ]]
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This particular slitscan provides some slightly configurable scaffolding around ffmpeg (based on a blogpost from [[http://oioiiooixiii.blogspot.com/2017/11/ffmpeg-temporal-slice-stacking-effect.html ][oioiiooixiii ]]) and is intended for non-realtime rendering at various resolutions. it's neither first, nor last. it's not especially interesting, educational or efficient. just another cloudform in the endless space of possible implementation…
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* installation, configuration, operation, etc
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install (macOS)…
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#+BEGIN_SRC text
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brew install ffmpeg drracket
git clone https://github.com/zzkt/slitscan.git
#+END_SRC
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install (debian/ubuntu)…
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#+BEGIN_SRC text
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sudo apt install ffmpeg racket
git clone https://github.com/zzkt/slitscan.git
#+END_SRC
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simple transform…
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#+BEGIN_SRC text
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racket slitscan.rkt -v input.mp4
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#+END_SRC
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transform at 1080p and delete working files, with minimal command line noise…
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#+BEGIN_SRC text
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racket slitscan.rkt --width 1920 --height 1080 --loglevel quiet --cleanup input.mp4
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#+END_SRC
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options…
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#+BEGIN_SRC text
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slitscan [ <option > ... ] <video-file >
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where <option > is one of
-v, --verbose : various verbose messages
-l <level >, --loglevel <level > : loglevel for ffmpeg e.g. quiet, error, warning, info, debug
-c, --cleanup : Clean up temporary/working files
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-n, --noresize : do not resize the input file
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--horizontal : output a horizontal video only (default: both)
--vertical : output a vertical video only (default: both)
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--width <pixels > : width of transform video
--height <pixels > : height of tansform video
-f <folder >, --in-folder <folder > : input folder
-o <folder >, --out-folder <folder > : output folder
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--help, -h : Show this help
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#+END_SRC
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* further, etc
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[[slitscope_1.jpeg ]]
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- The Fourth Dimension and How to Get There by Rudy Rucker
- Muybridge's Complete Human and Animal Locomotion, Vol. I
- Baroness Elsa, by Irene Gammel
