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Codecs and containers. From Wikipedia, "a codec is a device or computer program capable of encoding and/or decoding a digital data stream or signal." In general, codecs are utilized by multimedia applications to encode or decode audio or video streams.
FFmpeg is a complete, cross-platform solution to record, convert and stream audio and video. It includes libavcodec - the leading audio/video codec library.
Video Acceleration API (VA-API) is a specification and open source library to provide both hardware accelerated video encoding and decoding, developed by Intel.
This document describes the codecs (decoders and encoders) provided by the libavcodec library. CODEC OPTIONS. libavcodec provides some generic global options, which can be set on all the encoders and decoders. In addition, each codec may support so-called private options, which are specific for a given codec.
The libavcodec library provides a generic encoding/decoding framework and contains multiple decoders and encoders for audio, video and subtitle streams, and several bitstream filters.
ffmpeg is a universal media converter. It can read a wide variety of inputs - including live grabbing/recording devices - filter, and transcode them into a plethora of output formats.
To check if it is working play a video which is using a codec supported by your VA-API driver (vainfo tells you which codecs are supported, but Chromium will only support VP9 and h264): Open the DevTools by pressing Ctrl+Shift+I or on the Inspect button of the context (right-click) menu
