说明：  windows下编译ffplay的方法 ffplay是一个基于ffmpeg的开源软件，主要开发环境为linux，本文档提供windows下的编译方法，便于移植使用
(windows compile ffplay way ffplay is an open-source software based on ffmpeg, the main development environment for linux, this document provides methods to compile under windows, easy to transplant the use of)