ffmpeg源码安装:http://blog.yundiantech.com/?log=blog&id=35
1.安装yasm
tar xvzf yasm-1.3.0.tar.gz
cd yasm-1.3.0
./configure
make && make install
2.安装nasm(2.13以上版本)
tar xvf nasm-2.14.02.tar.bz2
cd nasm-2.14.02
./configure
make && make install
3.安装cmake
apt install cmake -y
4.编译x264(只编译静态库)
tar xvf x264-snapshot-20191024-2245-stable.tar.bz2
cd x264-snapshot-20191024-2245-stable
./configure --enable-static --prefix=…/x264 --enable-pic
make -j16
make install
5.编译ffmpeg
tar xvf ffmpeg-4.2.3.tar.bz2
cd ffmpeg-4.2.3
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:…/x264/lib/pkgconfig
./configure --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libx264 --prefix=…/ffmpeg
make -j32
make install
注:如果报错找不到x264或x265,ubunut下多半是因为没有安装pkg-config。安装命令为:apt install pkg-config
ffmpeg -version提示找不到,原因是没有配置环境变量
配置ffmpeg环境变量:gedit ~/.bashrc
export FFmpeg_PATH=/usr/ffmpeg4.1/ffmpeg
#需要让os能够找到 ffmpeg ffprobe等命令
export PATH=$FFmpeg_PATH/bin:$PATH
#需要提供路径, 让ffmpeg ffprobe等命令找到需要的依赖
export LD_LIBRARY_PATH=$FFmpeg_PATH/lib:$LD_LIBRARY_PATH