ubuntu18.04安装ffmpeg

编译ffmpeg命令如下：

1.安装yasm

powershell 复制代码

wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz
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)

powershell 复制代码

wget https://www.nasm.us/pub/nasm/releasebuilds/2.14.02/nasm-2.14.02.tar.bz2
tar xvf nasm-2.14.02.tar.bz2
cd nasm-2.14.02
./configure
make && make install

3.安装其他依赖

powershell 复制代码

apt install cmake -y

4.编译x264(只编译静态库)

x264下载地址：

http://ftp.videolan.org/pub/videolan/x264/snapshots/

powershell 复制代码

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x265(只编译静态库)

x265下载地址:

http://ftp.videolan.org/pub/videolan/x265/

powershell 复制代码

tar xvf x265_3.2.tar.gz
cd x265_3.2/build/linux/
cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX="../../../x265" -DENABLE_SHARED:bool=off ../../source
make -j16
make install

6.编译ffmpeg

powershell 复制代码

tar xvf ffmpeg-4.1.3.tar.bz2
cd ffmpeg-4.1.3
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:../x264/lib/pkgconfig:../x265/lib/pkgconfig
./configure --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libx264 --enable-libx265 --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

7、配置ffmpeg环境变量

powershell 复制代码

gedit ~/.bashrc 
export FFmpeg_PATH=/usr/ffmpeg4.1/ffmpeg

需要让os能够找到 ffmpeg ffprobe等命令

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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

powershell 复制代码

export LD_LIBRARY_PATH=$FFmpeg_PATH/lib:$LD_LIBRARY_PATH