Ffmpeg learning - core module

ffmpeg Library divided into 6 Library composition ：

① libavformat ： It is used to generate and analyze various audio and video packaging formats , Including obtaining the information required for encoding and decoding
Information to generate encoding and decoding context structure and read audio and video frames and other functions ;

②libavcodec ： For all kinds of sounds / Image codec ;

③ libavutil ： Contains some common utility functions ;

④libswscale ： For video scene scaling 、 Color mapping conversion ;

⑤libavfilter： For post effect processing , For example, add watermark, etc ;

⑥libavdevice： For video source acquisition ;