# official PPA comes with ffmpeg 2.8, which lacks tons of features, we use ffmpeg 4.0 here sudo add-apt-repository ppa:jonathonf/ffmpeg-4 # for ubuntu20.04 official PPA is already version 4.2, you may skip this step sudo apt-get update sudo apt-get install -y build-essential python3-dev python3-setuptools make cmake sudo apt-get install -y ffmpeg libavcodec-dev libavfilter-dev libavformat-dev libavutil-dev # note: make sure you have cmake 3.8 or later, you can install from cmake official website if it's too old git clone --recursive https://github.com/dmlc/decord cd decord mkdir build && cd build cmake .. -DUSE_CUDA=0 -DCMAKE_BUILD_TYPE=Release make cmake .. -DUSE_CUDA=ON -DCMAKE_BUILD_TYPE=Release opencv-python-headless --extra-index-url https://download.pytorch.org/whl/cu113 torch numpy transformers Pillow decord