mantissa- / cmd

A collection of random shell commands to make my life easier

cmd

A collection of random shell commands to make my life easier

ImageMagick Shenanigans

Convert all EXR files in current folder to JPG

parallel convert -quality 100 -scale 2000000@ '{}' '{.}.jpg' ::: *.exr

Force RGB Colorspace

parallel convert -set colorspace sRGB -colorspace RGB -quality 100 -scale 2000000@ '{}' '{.}.jpg' ::: *.exr

Bonus round:

• Add -profile profile_name.icc to specify an ICC profile
• The scale parameter with @ at the end specifies the image size in megapixels. For example, a 2:1 image wil automatically be scaled to 2000x1000px

Resize all JPG images in current folder to fit 1920x1080 frame and fill the background with black

parallel convert -resize 1920x1080 -extent 1920x1080 -gravity Center -background black '{}' '{.}.png' ::: *.jpg

Convert all TIF files to EXR (raw exr that is, not linear or AcesCG because I'm a weirdo)

find /path/to/folder/ -name '*.tif' | parallel mogrify {} -format exr -compress DWAB {}

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FFMPEG Fun

Convert JPG image sequence to mp4

ffmpeg -framerate 30 -pattern_type glob -i '*.jpg' -r 30 -crf 25 -preset veryslow -pix_fmt yuv420p -c:v libx264 ../000-out.mp4

Convert video to JPG image sequence

ffmpeg -i video.mov -q:v 2 %04d.jpg

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Raw Conversion

dcraw "one size fits all" raw to linear 16-bit tif

parallel dcraw -v -w -o 7 -4 -T -q 0 -p embed '{}' ::: *

• -v = verbose
• -w = respect cam color temp
• -o = ouptut colorspace
• -4 = linearize
• -q = debayer quality, fastest
• -p = embed cam profile

Nikon Raw to 16-bit AcesCG: parallel dcraw_emu -v -w -W -H 2 -o 6 -6 -T -q 0 '{}' ::: *.NEF