Python 3.6+ interface to libheif library
pip install pyheif
brew install libheif
pip install git+https://github.com/david-poirier-csn/pyheif.git
yum|apt install libheif-dev libde264-dev x265-dev
pip install git+https://github.com/david-poirier-csn/pyheif.git
Sorry, not going to happen!