FFmpeg自带H.264解码器,But did not bring their ownH.264编码器,所以就要用到x264库了

一、x264是什么？

x264是一个开源的H.264/MPEG-4 AVC视频编码函数库,Coding is possible through this libraryh264视频

二、配置过程

1.下载

msys官网：https://www.msys2.org/
After downloading, install it all the way

2.Configure the tools required for compilation

1. 更换国内源
   对\etc\pacman.d里的三个mirrorlist文件,Add them to the front of the official mirror respectively

mirrorlist.mingw32：

Server = http://mirrors.ustc.edu.cn/msys2/mingw/i686/

mirrorlist.mingw64：

Server = http://mirrors.ustc.edu.cn/msys2/mingw/x86_64/

mirrorlist.mingw：

Server = http://mirrors.ustc.edu.cn/msys2/msys/$arch/

2. 更新软件库

pacman -Syu//It will restart after the first input,to change the source
pacman -Su
pacman -S mingw-w64-i686-gcc
pacman -S mingw-w64-x86_64-gcc
pacman -S base-devel
pacman -S nasm
pacman -S yasm

3. 检查：
   打开MSYS2 64bit,执行gcc -v,If there is no error, it means it is fine

3.配置x264

1. 下载x264源码包,地址：https://www.videolan.org/developers/x264.html
2. 下载后放到msys64\home下
3. 打开MSYS2 MinGW 64-bit,执行./configure --prefix=../build --host=x86_64-w64-mingw32 --enable-shared --extra-ldflags=-Wl,--output-def=libx264.def会生成一个def文件
4. 将x264.dll也放在vs/vc的bin下,如我的目录就是C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64下,cmd命令：

lib /machine:x64 /def:libx264.def

produces what we wantlib文件（做好的x264-155.dll、.def、.lib
链接：https://pan.baidu.com/s/1mcNkEXjOJUZs9LcI5YKT7w
提取码：w1js）

4.测试

1. 在工程里添加x264.h、x264_config.h、libx264.dll和libx264.lib
2. 在项目->属性->链接器->输入->输入->附加依赖库->添加libx264.lib
3. 测试代码如下：

#include <iostream>
#include <string>
#include "stdint.h" 
extern "C"
{
    
#include "x264.h"
#include "x264_config.h"
};
using namespace std;

int main(int argc, char **argv)
{
    
	x264_param_t param;
	x264_param_default(&param);
	cout << "hello,x264" << endl;
	return 0;
}

成功！！！