记录ffmpeg使用x264

参考：https://blog.csdn.net/MR_kdcon/article/details/114599697

一.编译x264

./configure --enable-shared --enable-static --prefix=/usr/local/x264_64 --host=mingw64

二.编译fdk-aac

导入CmakeList编译
参考：
https://blog.csdn.net/icsecurity/article/details/118382410?spm=1001.2014.3001.5501

一.编译ffmpeg

a.编译MINGW64版本

./configure --enable-gpl --enable-nonfree --enable-libx264 --enable-shared --enable-debug --extra-cflags=-I/usr/local/x264_64/include --extra-ldflags=-L/usr/local/x264_64 --prefix=/usr/local/ffmpeg_64

b.编译mvsc版本
参考：https://zhuanlan.zhihu.com/p/205156264
先切换到MVSC环境,打开64位msys2环境

"E:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat"

msys2_shell.cmd -use-full-path -mingw64

需要把下面的define注释掉

#if defined(_MSC_VER)
#define X264_API_IMPORTS 1
#endif

因为在x264.h中有定义这样

#ifdef X264_API_IMPORTS
#define X264_API __declspec(dllimport)
#else
#define X264_API
#endif

不知道为何__declspec(dllimport)会报错，可能时需要dll文件吧
然后下面的命令编译mvsc版本的ffmpeg

 ./configure --toolchain=msvc --enable-cross-compile --enable-gpl --enable-nonfree --enable-libx264 --enable-shared --enable-debug --extra-cflags=-I/usr/local/x264_64/include --extra-ldflags=-LIBPATH:/usr/local/x264_64/lib --prefix=/usr/local/ffmpeg_64

ffplay编译
主要要自己新建一个sdl2.pc放在PKG_CONFIG_PATH环境变量指向的目录下

image.png

sdl2.pc文件内容如下,要根据你实际路径修改prefix

prefix=/usr/local/SDL2-devel-2.0.14-VC/SDL2-2.0.14
libdir=${prefix}/lib/x64
includedir=${prefix}/include

Name: sdl2
Description: sdl2
Version: 2.0.14
Libs: -L${libdir} -lsdl2

然后开始配置和编译，主要是多了--enable-sdl2 --enable-ffplay

./configure --toolchain=msvc --enable-cross-compile --enable-gpl --enable-nonfree --enable-libx264 --enable-shared --enable-debug --enable-sdl2 --enable-ffplay --extra-cflags="-I/usr/local/x264_64/include -I/usr/local/SDL2-devel-2.0.14-VC/SDL2-2.0.14/include" --extra-ldflags="-LIBPATH:/usr/local/x264_64/lib -LIBPATH:/usr/local/SDL2-devel-2.0.14-VC/SDL2-2.0.14/lib/x64" --prefix=/usr/local/ffmpeg_64