切记删除原有ffmpeg

1、编译yasm。

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

make

make install

2、解压x264,进入目录,输入:

./configure --prefix=/usr/local/x264 --enable-shared --enable-static --enable-yasm

make

make install

3、解压ffmpeg,进入目录,输入:

./configure --prefix=/usr/local/ffmpeg --enable-shared --enable-yasm --enable-libx264 --enable-gpl --enable-pthreads --extra-cflags=-I/usr/local/x264/include --extra-ldflags=-L/usr/local/x264/lib

make

make install



编译完成后,修改环境编译,我在/etc/profile文件下增加如下字段:
FFMPEG=/usr/local/ffmpeg
X264=/usr/local/x264
YASM=/usr/local/yasm
export FFMPEG X264 YASM
export PATH=$PATH:$FFMPEG/bin:$X264/bin:$YASM/bin
export LD_LIBRARY_PATH=$YASM/lib:$X264/lib:$FFMPEG/lib:$LD_LIBRARY_PATH


测试

进入/usr/local/ffmpeg/bin目录;

./ffmpeg -v

如果无异常则安装成功;

异常

错误信息:

ffmpeg: error while loading shared libraries: libavdevice.so.56: cannot open shared object file: No such file or directory

此情况是因为ffmpeg未找到相关依赖包,可以通过以下方法解决

先 find / -name libavdevice.so.56 得到该文件的目录地址,我找到的是在ffmpeg安装目录的lib目录下;

然后 vim /etc/ld.so.conf 将上述目录添加到最后一行并保存退出;

再 ldconfig 使配置生效

附 ld.son.conf
/usr/local/ffmpeg/lib
/usr/local/lib

辅助
http://blog.csdn.net/defonds/article/details/9698959

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