The biggest part of creating this video was to generate satisfactory glitched material. I researched various ways how to glitch images using SoX tool and a glitch in pre-3.0 ffmpeg’s jpeg-le codec. Below is a BASH script which worked through all .mov videos in the current folder, extracted frames, glitched it and stitched back the videos from frames. Here’s the gist of all glitches in a summary:
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# pre-3.0 ffmpeg jpeg-le glitch ffmpeg -i INPUT.ppm -c:v jpegls -pred 60 OUTPUT.jpg # all sox operations used a .ppm file format # interpreted as: RAWFILEOPTS="-e unsigned -r 44100 -b 8 -c 2" # which was then used like this: sox -t raw $RAWFILEOPTS INPUT.ppm -t raw $RAWFILEOPTS OUTPUT.ppm $EFFECT # and effects EFFECT used were: # echoes echos 0.2 0.2 6700 0.5 4900 0.5 9200 0.5 1400 0.5 # reversed echoes reverse echos 0.2 0.2 6700 0.5 4900 0.5 9200 0.5 1400 0.5 # earwax earwax # stretch stretch 1.00002 # chorus chorus 0.5 1 90 0.4 0.25 9 -t 60 0.32 0.4 0.2 -t 40 0.3 0.3 0.5 -s # downsample (use 50 or 99) downsample 50 # reverb 1 gain -15 reverb 75 0 100 100 0 10 # reverb 2 reverb -w 50 50 5 100 0 0 # trim repeat 3 \ trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+14)) $((RANDOM%3+19))\ trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+11)) $((RANDOM%3+14))\ trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+14)) $((RANDOM%3+19)) |
Here’s a full bash script:
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#!/bin/bash ###################################################################################################### # jpegLE! # $FFMPEG -loglevel 16 -i $i -pred 60 -c:v jpegls $i.jpgls.jpg # ffmpeg -loglevel 16 -i $i.jpgls.jpg -c:v png $i.png # folder: "jpegle" # SOXEFFECT="echos 0.2 0.2 6700 0.5 4900 0.5 9200 0.5 1400 0.5" # folder: echos # SOXEFFECT="reverse echos 0.2 0.2 6700 0.5 4900 0.5 9200 0.5 1400 0.5" # folder: "reverse_echo" # SOXEFFECT="earwax" # SOXEFFECT="stretch 1.00002" # SOXEFFECT="chorus 0.5 1 90 0.4 0.25 9 -t 60 0.32 0.4 0.2 -t 40 0.3 0.3 0.5 -s" # SOXEFFECT="downsample 50" # SOXEFFECT="downsample 99" # SOXEFFECT="gain -15 reverb 75 0 100 100 0 10" # SOXEFFECT="reverb -w 50 50 5 100 0 0" # SOXEFFECT="repeat 3 \ # trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+14)) $((RANDOM%3+19))\ # trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+11)) $((RANDOM%3+14))\ # trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+14)) $((RANDOM%3+19))" ###################################################################################################### # raw file interpretation by sox RAWFILEOPTS="-e unsigned -r 44100 -b 8 -c 2" # image header size in bytes - it will be preserved in new file HEADERSIZE=500 # ffmpeg executable ffmpeg="/usr/bin/ffmpeg -loglevel 16" # jpegls glitch needs an older ffmpeg oldffmpeg="/home/random/src/ffmpeg/ffmpeg-2.0.7/ffmpeg -loglevel 16" # run this in the folder with movie clips, please pwd=`pwd` mkdir $pwd/tmp mkdir $pwd/tmp/frames mkdir $pwd/tmp/jpegls mkdir $pwd/tmp/rvrsecho mkdir $pwd/tmp/echos mkdir $pwd/tmp/earwax mkdir $pwd/tmp/stretch mkdir $pwd/tmp/chorus mkdir $pwd/tmp/downsample50 mkdir $pwd/tmp/downsample99 mkdir $pwd/tmp/reverb1 mkdir $pwd/tmp/reverb2 mkdir $pwd/tmp/trim for i in *.mov do cd $pwd echo ">> processing clip: $i" # extract all frames echo "++ extracting frames ..." $ffmpeg -i "$i" tmp/frames/frame%6d.ppm cd tmp/frames for f in *.ppm do echo ">> processing frame $f" # fetch original file size FILESIZE=`stat -c%s $f` echo "-- jpegls ..." $oldffmpeg -i "$f" -c:v jpegls -pred 60 ../jpegls/$f.jpegls.jpg echo "-- soxed: echoes ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed echos 0.2 0.2 6700 0.5 4900 0.5 9200 0.5 1400 0.5 echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../echos/$f.echos.ppm rm $f.soxed $f.trimmed echo "-- soxed: rvrsecho ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed reverse echos 0.2 0.2 6700 0.5 4900 0.5 9200 0.5 1400 0.5 echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../rvrsecho/$f.rvrsecho.ppm rm $f.soxed $f.trimmed echo "-- soxed: earwax ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed earwax echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../earwax/$f.earwax.ppm rm $f.soxed $f.trimmed echo "-- soxed: stretch ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed stretch 1.00002 echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../stretch/$f.stretch.ppm rm $f.soxed $f.trimmed echo "-- soxed: chorus ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed chorus 0.5 1 90 0.4 0.25 9 -t 60 0.32 0.4 0.2 -t 40 0.3 0.3 0.5 -s echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../chorus/$f.chorus.ppm rm $f.soxed $f.trimmed echo "-- soxed: downsample50 ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed downsample 50 echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../downsample50/$f.downsample50.ppm rm $f.soxed $f.trimmed echo "-- soxed: downsample99 ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed downsample 99 echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../downsample99/$f.downsample99.ppm rm $f.soxed $f.trimmed echo "-- soxed: reverb1 ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed gain -15 reverb 75 0 100 100 0 10 echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../reverb1/$f.reverb1.ppm rm $f.soxed $f.trimmed echo "-- soxed: reverb2 ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed reverb -w 50 50 5 100 0 0 echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../reverb2/$f.reverb2.ppm rm $f.soxed $f.trimmed echo "-- soxed: trim ..." sox -t raw $RAWFILEOPTS $f -t raw $RAWFILEOPTS $f.soxed repeat 3 \ trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+14)) $((RANDOM%3+19))\ trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+11)) $((RANDOM%3+14))\ trim $((RANDOM%3+1)) $((RANDOM%3+6)) $((RANDOM%3+8)) $((RANDOM%3+14)) $((RANDOM%3+19)) echo " . fixing headers..." head -c $HEADERSIZE $f > $f.header head -c $FILESIZE $f.soxed > $f.trimmed tail -c `expr $FILESIZE - $HEADERSIZE` $f.trimmed >> $f.header mv $f.header ../trim/$f.trim.ppm rm $f.soxed $f.trimmed done cd $pwd echo ">> creating JPEGLS movie file ..." $ffmpeg -i tmp/jpegls/frame%6d.ppm.jpegls.jpg tmp/jpegls/jpegls.$i echo "++ removing frames ..." rm tmp/jpegls/*.jpg echo ">> creating echos movie file ..." $ffmpeg -i tmp/echos/frame%6d.ppm.echos.ppm tmp/echos/echos.$i echo "++ removing frames ..." rm tmp/echos/*.ppm echo ">> creating rvrsecho movie file ..." $ffmpeg -i tmp/rvrsecho/frame%6d.ppm.rvrsecho.ppm tmp/rvrsecho/rvrsecho.$i echo "++ removing frames ..." rm tmp/rvrsecho/*.ppm echo ">> creating earwax movie file ..." $ffmpeg -i tmp/earwax/frame%6d.ppm.earwax.ppm tmp/earwax/earwax.$i echo "++ removing frames ..." rm tmp/earwax/*.ppm echo ">> creating stretch movie file ..." $ffmpeg -i tmp/stretch/frame%6d.ppm.stretch.ppm tmp/stretch/stretch.$i echo "++ removing frames ..." rm tmp/stretch/*.ppm echo ">> creating chorus movie file ..." $ffmpeg -i tmp/chorus/frame%6d.ppm.chorus.ppm tmp/chorus/chorus.$i echo "++ removing frames ..." rm tmp/chorus/*.ppm echo ">> creating downsample50 movie file ..." $ffmpeg -i tmp/downsample50/frame%6d.ppm.downsample50.ppm tmp/downsample50/downsample50.$i echo "++ removing frames ..." rm tmp/downsample50/*.ppm echo ">> creating downsample99 movie file ..." $ffmpeg -i tmp/downsample99/frame%6d.ppm.downsample99.ppm tmp/downsample99/downsample99.$i echo "++ removing frames ..." rm tmp/downsample99/*.ppm echo ">> creating reverb1 movie file ..." $ffmpeg -i tmp/reverb1/frame%6d.ppm.reverb1.ppm tmp/reverb1/reverb1.$i echo "++ removing frames ..." rm tmp/reverb1/*.ppm echo ">> creating reverb2 movie file ..." $ffmpeg -i tmp/reverb2/frame%6d.ppm.reverb2.ppm tmp/reverb2/reverb2.$i echo "++ removing frames ..." rm tmp/reverb2/*.ppm echo ">> creating trim movie file ..." $ffmpeg -i tmp/trim/frame%6d.ppm.trim.ppm tmp/trim/trim.$i echo "++ removing frames ..." rm tmp/trim/*.ppm done |
