centos7下视频解码播放环境搭建（ffmpeg等库编译）

1.软件环境

操作系统环境：centos7

ffmpeg源码： github上的master版本（当前官网的3.4.1版本有bug，在主干中修复了'x264_bit_depth' undeclared）

x264源码：x264-20180201版本

SDL源码：SDL1.2

Yasm源码：yasm1.3.0

2.编译与安装

设置环境变量：（可以在/root/.bashrc脚本中设置，重启有效）
export PATH="$PATH:/usr/local/bin:/usr/local/yasm/bin:/usr/local/SDL/bin:/usr/local/x264/bin"
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
export C_INCLUDE_PATH="$C_INCLUDE_PATH:/usr/local/SDL/include/SDL:/usr/local/x264/include"
export LD_LIBRARY_PATH="/usr/local/lib:/usr/local/SDL/lib:/usr/local/x264/lib:$LD_LIBRARY_PATH"

2.1 yasm安装

./configure --prefix=/usr/local/yasm
make
make install

2.2 SDL安装

./configure --prefix=/usr/local/SDL
make
make install

2.3 x264安装

./configure --enable-shared --disable-asm --prefix=/usr/local/x264 
make 
make install

2.4 ffmpeg安装

./configure --enable-shared --disable-static --enable-libx264 --enable-gpl --prefix=/usr/local/ffmpeg-master
make
make install

3.安装好的库lib和头文件路径include

/usr/local/yasm

/usr/local/x264

/usr/local/SDL

/usr/local/ffmpeg-master

4. 补充.几个解码库路径：

xvid  http://downloads.xvid.org/downloads/xvidcore-1.1.3.tar.gz 
mp3  http://lame.sourceforge.net/index.php 
Ogg  http://download.savannah.nongnu.org/releases/liboggpp/packages/
AC3  http://sourceforge.net/projects/ac3filter/ 
mpg4  http://sourceforge.net/projects/mpg/ 
3gp  http://www.3gpp.org/ftp/Specs 
VC1  http://neuron2.net/dgdecnv/dgdecnv.html