glitch

Interface Fractures IF4Q

December 20, 2016

Interface Fractures is a series of audiovisual explorations Luka Prinčič has been developing in collaboration with the Slovenian Cinematheque since 2013. The series’ cinema-sound episodes share the same method and format: an immersive situation in the darkness of the cinema, the use of digital and open source tools for generating image and sound, a dichotomy between fixed composition and improvisation in time, a tendency for abstraction out of which fragments of the concrete arise, and playing with the synchronisation of sound and image. Although the creation process includes an examination of the contemporary human condition, conventional narration is not so important in the created performances and remains in the background. Interface Fractures is thus a fragmented excursion into abstract sound and the moving picture. Their synthetic integration emerges from the process of searching for fractures and subjectivities in a seeming impenetrability of polished and polarised interfaces – mediated, inter-machinic, interhuman.

Collaborators

Author: Luka Prinčič

Support

Production: Emanat – (emanat.si/en/production/luka-princic–interface-fractures-if4q)
Co-production: Slovenska kinoteka
Financial support: City Municipality Ljubljana, Ministry of Culture RS

Technical

Technical rider -> https://goo.gl/VAIHtq

Events

31.05.2017 at 21:00, 2017 – Community, Stadtwerkstadt, Linz, AT
02.02.2017, MENT, Pritličje, Ljubljana, SI
20.01.2017, Cirkulacija, Ljubljana, SI
20.12.2016, Slovenska kinoteka, Ljubljana, SI (odpade/cancelled)

Video

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jpeg-LS glitching with FFmpeg

October 26, 2016

In an older version of FFmpeg it was possible to glitch the image with JPEG-LS codec. Newer versions of FFmpeg don’t work anymore in this way, so one must download an old version and compile it (keep it local) – here 2.0.7 is used.

This script takes a video file as an argument, extracts frames, glitches them, and gathers frames back into a video file.

#!/bin/bash

# jpeg-LS glitcher by nova@deviator.si http://deviator.si

# check existence of input argument
# the $# variable will tell you the
# number of input arguments the script was passed. 
if [ $# -eq 0 ]
  then
    echo "Error. No arguments supplied. Please define a video"
    exit 1
fi

# does the movie file actually exist?
if [ ! -f $1 ]; then
    echo "Error. File not found!"
    exit 1
fi

# get this session's "ID"
SID=`date +%Y%m%d_%H%M%S`

# jpegls glitch needs an older ffmpeg 
FFMPEG=/home/random/src/ffmpeg/ffmpeg-2.0.7/ffmpeg

# create folder for this session
DIR=jpegls_$SID
echo "+++ creating folder $DIR ..."
mkdir $DIR

# create tmp folder
echo "+++ creating folder $DIR/tmp/ ..."
mkdir $DIR/tmp/

echo "+++ extracting all frames as images..."
echo
echo "----------------------------------------------------------"
echo
ffmpeg -loglevel 16 -i $1 $DIR/tmp/frame%5d.jpg

echo 
echo "----------------------------------------------------------"
echo "+++ processing each image..."

for i in $DIR/tmp/*.jpg
do
    
    echo "processing $i "
    $FFMPEG -loglevel 16 -i $i -pred 80 -c:v jpegls $i.jpgls.jpg
    ffmpeg -loglevel 16 -i $i.jpgls.jpg -c:v png $i.png
    
done

echo
echo "----------------------------------------------------------"
echo "+++ putting frames back into a movie ... "
ffmpeg -loglevel 16 -i $DIR/tmp/frame%5d.jpg.png $DIR/$SID.$1

echo
echo "+++ removing temporary folder ..."
rm -rf $DIR/tmp/

echo "\n--- end of the program. "

#!/bin/bash

# jpeg-LS glitcher by nova@deviator.si http://deviator.si

# check existence of input argument

# the $# variable will tell you the

# number of input arguments the script was passed.

if [ $# -eq 0 ]

then

echo "Error. No arguments supplied. Please define a video"

exit 1

# does the movie file actually exist?

if [ ! -f $1 ]; then

echo "Error. File not found!"

exit 1

# get this session's "ID"

SID=`date +%Y%m%d_%H%M%S`

# jpegls glitch needs an older ffmpeg

FFMPEG=/home/random/src/ffmpeg/ffmpeg-2.0.7/ffmpeg

# create folder for this session

DIR=jpegls_$SID

echo "+++ creating folder $DIR ..."

mkdir $DIR

# create tmp folder

echo "+++ creating folder $DIR/tmp/ ..."

mkdir $DIR/tmp/

echo "+++ extracting all frames as images..."

echo

echo "----------------------------------------------------------"

echo

ffmpeg -loglevel 16 -i $1 $DIR/tmp/frame%5d.jpg

echo

echo "----------------------------------------------------------"

echo "+++ processing each image..."

for i in $DIR/tmp/*.jpg

echo "processing $i "

$FFMPEG -loglevel 16 -i $i -pred 80 -c:v jpegls $i.jpgls.jpg

ffmpeg -loglevel 16 -i $i.jpgls.jpg -c:v png $i.png

done

echo

echo "----------------------------------------------------------"

echo "+++ putting frames back into a movie ... "

ffmpeg -loglevel 16 -i $DIR/tmp/frame%5d.jpg.png $DIR/$SID.$1

echo

echo "+++ removing temporary folder ..."

rm -rf $DIR/tmp/

echo "\n--- end of the program. "

Holly Herndon – Chorus [Official Video] on Vimeo

January 24, 2014

Holly Herndon – Chorus [Official Video] on Vimeo on Vimeo

via Holly Herndon – Chorus [Official Video] on Vimeo.

sound, noise, music & new media

glitch

Interface Fractures IF4Q

Collaborators

Support

Technical

Events

Video

jpeg-LS glitching with FFmpeg

Holly Herndon – Chorus [Official Video] on Vimeo

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