os: osx
before_install:
  - brew install qt
  - brew install ffmpeg@3.2
  - brew link ffmpeg
  - brew link qt
  - export CPATH=/usr/local/Cellar/ffmpeg/3.2/include:$CPATH
  - export LIBRARY_PATH=/usr/local/Cellar/ffmpeg/3.2/lib:$LIBRARY_PATH
  - export DYLD_LIBRARY_PATH=/usr/local/Cellar/ffmpeg/3.2/lib:$DYLD_LIBRARY_PATH