More Subway Creations

edgesAnim

mkdir frames
ffmpeg -i IMG_1392.MOV -r 9 -f image2 frames/image-%4d.png
cp -R frames edgeFrames
cd edgeFrames
mogrify -canny 10x10+10%+30% *.png
mogrify -negate *.png
convert *.png edgesAnim.gif

mean-leveled


cd ../frames
convert *.png -evaluate-sequence mean ../mean.png

Creating Slit Scan Images from Quicktime Movies with FFMpeg on Mac OS X

slitscan_manhattanbridgeslitscan4

 

I have been filming out the window of subways lately and have come up with a foolproof method for creating slit scan images out of these vignettes. I use an iPhone 5s held in portrait mode, so the instructions below include a rotation of the video before compositing.

If they’re not already installed, install ffmpeg and imagemagick using Homebrew:

$> brew install imagemagick
$> brew install ffmpeg

Continue reading “Creating Slit Scan Images from Quicktime Movies with FFMpeg on Mac OS X”