Terminal

Homebrew

• https://brew.sh/

FFMPEG

Making gifs

• https://askubuntu.com/questions/648603/how-to-create-an-animated-gif-from-mp4-video-via-command-line

• https://medium.com/@colten_jackson/doing-the-gif-thing-on-debian-82b9760a8483

• https://superuser.com/questions/556029/how-do-i-convert-a-video-to-gif-using-ffmpeg-with-reasonable-quality

ffmpeg \
  -i yourFile.mov \
  -r 15 \
  -vf scale=512:-1 \
  -ss 00:00:03 -to 00:00:06 \
  yourFile.gif
  
  #hq
  ffmpeg -i demo.mov -vf "fps=15,scale=800:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" -loop 0 output.gif

ImageMagick

Documentation

• https://imagemagick.org/script/download.php#macosx

• https://imagemagick.org/script/convert.php

• https://imagemagick.org/script/mogrify.php

Compression

• https://stackoverflow.com/questions/7261855/recommendation-for-compressing-jpg-files-with-imagemagick

• Convert & save with same name#

#basic
magick image.jpg -strip -interlace Plane -gaussian-blur 0.05 -quality 85% -resize 75%  result.jpg

# compress all jpg in folder 
magick *.jpg -strip -interlace Plane -gaussian-blur 0.05 -quality 85% result.jpg
    
#parent folder
convert *.jpg -strip -interlace Plane -gaussian-blur 0.05 -quality 85%  -set filename:f '%t_web' ../'%[filename:f].jpg'

# into target folder in same directory
mogrify *.jpg -strip -interlace Plane -gaussian-blur 0.05 -quality 85% -path ../web *.jpg

# into target folder in parent directory
mogrify *.jpg -strip -interlace Plane -gaussian-blur 0.05 -quality 85% -path web *.jpg

Change file format

• Your EPS file is in CMYK colorspace. You need to convert it to sRGB before processing it

PNG to JPG

white bg

//batch 
mogrify -background white -flatten -format jpg  *.png

// single
convert Chun.png -background red -flatten  png_small.jpg

// and compress
convert moom_ref.png -format jpg -quality 85% test.jpg
convert moom_ref.png -format jpg -strip -interlace Plane -gaussian-blur 0.05 -quality 85% test.jpg

black bg

EPS to PNG

mogrify -format png -density 100 -colorspace sRGB -background transparent -units PixelsPerInch -resize 2475x3525 *.eps

Extract alpha from PNG

mogrify -set colorspace RGB -alpha extract -format jpg *.png

Extract alpha from white

convert test.jpg -fuzz 50%  -transparent white result.png

//batch
mogrify -fuzz 50%  -transparent white -set colorspace RGB -alpha extract -format jpg *.png


// batch add alpha from white in pngs, save to new folder
mogrify -fuzz 50%  -transparent white -set colorspace RGB -alpha extract -format jpg -path ../mask *.png

Extract color from image

// select red, fill rest with black
convert test.png -fill white -fuzz 10% -opaque red output.jpg

// has black outline    
convert test.png -fill black -fuzz 20% -opaque red -transparent black output.png 
convert test.png -fill black -fuzz 5% -opaque red -transparent black output.png 

mogrify -fill black -fuzz 5% -opaque red -transparent black output.jpg *png

// select red only

convert test.png -fill black -fuzz 20% -opaque #B93C3C -transparent black output.png 

Converting images to black or a fill color

//batch overwrite
mogrify -format jpg -fill black -background black -colorize 100%  *.jpg

HtTrack

http://duitbetter.com/2021/04/05/shader-dev-study-01-c-arnold/,http://duitbetter.com/2021/04/12/shader-dev-study-02-sidemask-pattern/,http://duitbetter.com/2021/04/20/shader-dev-study-03-height-to-color-pattern/,http://duitbetter.com/2021/05/09/shader-dev-study-04-moom-osl-shader/

+*.gif +*.jpg +*.png +*.mp4 

Ultimate Mac environment setup

Homebrew

packages

#homebrew
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

#packages
brew install youtube-dl
brew install python
brew install imagemagick
brew install ghostscript
brew install npm
brew install storyboarder

$ sudo easy_install pip
$ sudo pip install --upgrade pip

#cask
brew install caskroom/cask/brew-cask

#update xcode
sudo rm -rf /Library/Developer/CommandLineTools
xcode-select --install

graphical

• xcode: https://stackoverflow.com/questions/34617452/how-to-update-xcode-from-command-line

• Installing packages from terminal

Atom setup

#Go to Menu > Install Shell Commands
#run below
apm install adobe-script-runner atom-beautify prettier-atom atom-spotify2 
atom-transpose case-keep-replace change-case copy-path duplicate-line-or-selection
editorconfig file-icons git-plus highlight-selected local-history project-manager 
related set-syntax sort-lines sublime-style-column-selection tab-foldername-index 
toggle-quotes atom-wrap-in-tag atom-ternjs autoclose-html 
autocomplete-modules color-picker docblockr emmet emmet-jsx-css-modules 
es6-javascript js-hyperclick hyperclick pigmentstree-view-copy-relative-path
lodash-snippets language-babel atom-jest-snippets one-dark-ui dracula-theme

##react-es7-snippets sync-settings  linter-eslint 

Get all DMG

#utility
    open https://www.pureref.com/freedownload.php?build=OSX64.dmg&version=1.11.1&downloadKey=kwshPqIAWUNsGVwJYCjKag%3D%3D
    #utorrent
    #Microsoft Office
    open https://login.microsoftonline.com/?whr=scad.edu
    open https://depts.scad.edu/coronavirus/academic-software

# optimize
    open https://apps.apple.com/us/app/magnet/id441258766?mt=12
    
#creative 
     open https://www.blackmagicdesign.com/products/davinciresolve/

Change screenshot directory

cd ~/desktop
mkdir screenshots

defaults write com.apple.screencapture location ~/desktop/screenshots
defaults write com.apple.screencapture type -string "png"

Disable Drop-shadow screenshots

defaults write com.apple.screencapture disable-shadow -bool true
killall SystemUIServer