homebrew-formula

how to install

1. Clone this repo:

   git clone https://github.com/wasphin/homebrew-formula.git

2. Go to the repo dir and install:

   brew install --build-from-source ffmpeg.rb

how to upgrade

1. Download the latest ffmpeg.rb from upstream:

   rm -rf ffmpeg.rb && wget -c https://raw.githubusercontent.com/Homebrew/homebrew-core/master/Formula/f/ffmpeg.rb

2. Patch and update the formula file:

   git add -p ffmpeg.rb
   git checkout ffmpeg.rb

3. Build test:

   brew install --build-from-source ffmpeg.rb

4. Commit & push.