Install gstreamer1.0-vaapi-doc by entering the following commands in the terminal:
sudo apt update sudo apt install gstreamer1.0-vaapi-doc
Description:
GStreamer VA-API documentation and manuals
Gstreamer-vaapi is a collection of GStreamer plugins and helper libraries that allow hardware accelerated video decoding, encoding and processing through VA-API. . This package contains documentation for libraries and elements.
Homepage: https://github.com/01org/gstreamer-vaapi/
Version: 1.14.0-1
Section: universe/doc