linux下安装ffmpeg的详细教程

wget http://www.ffmpeg.org/releases/ffmpeg-3.1.tar.gz
tar -zxvf ffmpeg-3.1.tar.gz 

cd ffmpeg-3.1
./configure --prefix=/usr/local/ffmpeg
make && make install

vi /etc/profile
在最后PATH添加环境变量：
export PATH=$PATH:/usr/local/ffmpeg/bin
保存退出
查看是否生效
source /ect/profile  设置生效

ffmpeg -version    查看版本

wget http://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz
tar -zxvf yasm-1.3.0.tar.gz
cd yasm-1.3.0
./configure
make && make install

deb http://www.deb-multimedia.org jessie main

sudo apt-get update
sudo apt-get install deb-multimedia-keyring
sudo apt-get install ffmpeg