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NORDLICHT(1) User Commands NORDLICHT(1)

nordlicht - creates colorful barcodes from video files

nordlicht [ OPTION]... VIDEOFILE

-w, --width=INT
set the barcode's width; by default it's "height*10", or 1920 pixels, if both are undefined
-h, --height=INT
set the barcode's height; by default it's "width/10"
-o, --output=FILENAME
set output filename, the default is VIDEOFILE.png; when you specify an *.bgra file, you'll get a raw 32-bit BGRA file that is updated as the barcode is generated
-s, --style=STYLE
default is 'horizontal', see "Styles" section below. You can specify more than one style, separated by '+', to get multiple tracks
--start=FLOAT
specify where to start the barcode (ratio between 0 and 1)
--end=FLOAT
specify where to end the barcode (ratio between 0 and 1)
-q, --quiet
don't show progress indicator
--help
display this help and exit
--version
output version information and exit

horizontal
compress frames to vertical lines and append them
vertical
compress frames to horizontal lines and rotate them counterclockwise by 90 degrees
slitscan
take single columns while constantly moving to the right (and wrapping back to the left)
middlecolumn
take the middlemost column of each frame
thumbnails
display small thumbnails at regular intervals
spectrogram
spectrogram of the first audio track (not all sample formats are supported yet)

nordlicht video.mp4
generate video.mp4.nordlicht.png of default size
nordlicht video.mp4 -s vertical
compress individual frames to columns
nordlicht video.mp4 -w 1000 -h 1000 -o barcode.png
override size and name of the output file

Written by Sebastian Morr and contributors.
January 2019 nordlicht 0.4.5

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