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@luizomf
luizomf / upscale_1080p_to_4k_using_ffmpeg.md
Last active April 21, 2025 16:59
Upscale 1080p to 4k using ffmpeg

Upscale 1080p to 4k using ffmpeg

Just use the command below:

ffmpeg -i INPUT_FILE \
  -vf scale=3840x2160:flags=lanczos \
  -c:v libx264 \
  -crf 13 \
 -c:a aac -b:a 512k \

If .DS_Store was never added to your git repository, simply add it to your .gitignore file.

If you don't have one, create a file called

.gitignore

In your the root directory of your app and simply write

@0sc
0sc / encrypt_decrypt.rb
Created January 12, 2018 16:12
Simple encrypt decrypt strings in ruby
require 'openssl'
def encrypt_string(str)
cipher_salt1 = 'some-random-salt-'
cipher_salt2 = 'another-random-salt-'
cipher = OpenSSL::Cipher.new('AES-128-ECB').encrypt
cipher.key = OpenSSL::PKCS5.pbkdf2_hmac_sha1(cipher_salt1, cipher_salt2, 20_000, cipher.key_len)
encrypted = cipher.update(str) + cipher.final
encrypted.unpack('H*')[0].upcase
end
@zkat
zkat / index.js
Last active April 30, 2025 21:38
npx is cool
#!/usr/bin/env node
console.log('yay gist')
@rwarbelow
rwarbelow / running_app_in_production_locally.markdown
Created November 11, 2015 18:26
How to Run a Rails App in Production Locally
  1. Add gem 'rails_12factor' to your Gemfile. This will add error logging and the ability for your app to serve static assets.
  2. bundle
  3. Run RAILS_ENV=production rake db:create db:migrate db:seed
  4. Run rake secret and copy the output
  5. From the command line: export SECRET_KEY_BASE=output-of-rake-secret
  6. To precompile your assets, run rake assets:precompile. This will create a folder public/assets that contains all of your assets.
  7. Run RAILS_ENV=production rails s and you should see your app.

Remember to clobber your assets (rake assets:clobber) and re-precompile (rake assets:precompile) if you make changes.

@simonexmachina
simonexmachina / .gitignore
Last active October 24, 2019 05:44
Example .gitignore file for iOS projects
## Build generated
build/
DerivedData
build.xcarchive
## Various settings
*.pbxuser
!default.pbxuser
*.mode1v3
!default.mode1v3
@squarism
squarism / iterm2.md
Last active May 7, 2025 17:18
An iTerm2 Cheatsheet

Tabs and Windows

Function Shortcut
New Tab ⌘ + T
Close Tab or Window ⌘ + W (same as many mac apps)
Go to Tab ⌘ + Number Key (ie: ⌘2 is 2nd tab)
Go to Split Pane by Direction ⌘ + Option + Arrow Key
Cycle iTerm Windows ⌘ + backtick (true of all mac apps and works with desktops/mission control)
####### License: MIT
"""MIT License
Copyright (c) 2015 Aaron Hall
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
@MikeNGarrett
MikeNGarrett / siege
Last active December 3, 2024 17:20
Siege with JSON POST data
# Changed to use content-type flag instead of header: -H 'Content-Type: application/json'
siege -c50 -t60S --content-type "application/json" 'http://domain.com/path/to/json.php POST {"ids": ["1","2","3"]}'
@rbialek
rbialek / config
Created June 7, 2011 13:32
ssh/.config
Host github.com
User git
Hostname github.com
PreferredAuthentications publickey
IdentityFile /home/user/.ssh/id_rsa