怎么用xcode来阅读 编译ffmpeg源码
https://blog.csdn.net/u011577874/article/details/73000207
makefile规则
因为ffmpeg是用Makefile进行编译管理的, 所以还是要学习下Makefile
https://seisman.github.io/how-to-write-makefile/rules.html
http://c.biancheng.net/view/7113.html
ffmpeg简单命令
https://zhuanlan.zhihu.com/p/67878761
详细教程(向大神致敬, 一路走好
https://blog.csdn.net/leixiaohua1020/article/details/15811977