【1】ffmpeg+mingw32编译
借鉴 https://blog.csdn.net/gjpzl/article/details/97616457
(1)准备环境
下载
https://github.com/rageworx/ffmpeg-2.2-mingw.git
https://www.libsdl.org/release/SDL-devel-1.2.15-mingw32.tar.gz
下载SDL之后解压到mingw-gcc-4.8(的/bin /include /lib)，再修改修改SDL-config 为prefix=/mingw, ffmpeg configure配置完检查打印看是否支持SDL，FFPLAY依赖SDL
下载x264
https://www.videolan.org/developers/x264.html
./configure --enable-static --enable-shared --disable-asm --disable-avs --prefix=/mingw/
make && make install
(2)
./configure --disable-shared --disable-asm --enable-debug
./configure --disable-shared --disable-asm --enable-debug --disable-optimizations --disable-stripping
./configure --disable-shared --enable-static --enable-debug --disable-asm --enable-libx264 --enable-gpl 如果需要支持x264需要打开--enable-libx264 --enable-gpl
make