FFMPEG的函数翻译文档

https://blog.csdn.net/explorer_day/article/category/6289310/2

https://www.cnblogs.com/tocy/p/ffmpeg-framework-analysis.html

https://blog.csdn.net/fakine/article/details/79076072

http://blog.sina.com.cn/s/blog_48f93b530100jz4x.html

https://blog.csdn.net/dxpqxb/article/details/42266811

https://blog.csdn.net/chenshengfa/article/details/50512616

http://www.52rd.com/Blog/wqyuwss/559/     MP4文件格式

https://blog.csdn.net/lxmnet123/article/details/10734717  详细对MP4文件的定义