NAME

       nordlicht - creates colorful barcodes from video files

SYNOPSIS

       nordlicht [OPTION]... VIDEOFILE

OPTIONS

       -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 (in percent between 0 and 1)

       --end=FLOAT
              specify where to end the barcode (in percent between 0 and 1)

       -q, --quiet
              don't show progress indicator

       --help display this help and exit

       --version
              output version information and exit

   Styles:
       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)

EXAMPLES

       nordlicht video.mp4
              generate video.mp4.png of 1000 x 100 pixels size

       nordlicht video.mp4 --style=vertical
              compress individual frames to columns

       nordlicht video.mp4 -w 1920 -h 200 -o barcode.png
              override size and name of the output file

AUTHOR

       Written by Sebastian Morr and contributors.