本文介绍ffmpeg开源编码库中新老接口的对照表，对研究软件视频编解码的人员有参考学习价值-This article describes the ffmpeg library source code comparison table of old and new interfaces, software video codec for research personnel have reference value learning

FFMPEG源码中解码H264部分的decode_frame函数的调用关系图，详细到每一个被调函数，以及被调函数的被吊函数等。学习FFMPEG解码流程很好的帮助文档。-FFMPEG source code decoding H264 part decode_frame function call graph, each one in detail to the called function, and the called function was hanging functions, etc.