linux下安装ffmpeg的详细教程、ffmpeg is not installed

1、下载解压

wget http://www.ffmpeg.org/releases/ffmpeg-6.0.tar.gz
tar -zxvf ffmpeg-6.0.tar.gz 

2、 进入解压后目录,输入如下命令/usr/local/ffmpeg为自己指定的安装目录

cd ffmpeg-6.0
./configure --prefix=/usr/local/ffmpeg
make 
sudo make install

3、配置变量

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

4、查看版本

ffmpeg -version    查看版本

注意（可能出现的错误）：

若安装过程中出现以下错误：

yasm/nasm not found or too old.

Use –disable-yasm for a crippled build. If you think configure made a mistake, make sure you are using the latest version from Git. If the latest version fails, report the problem to the [email protected] mailing list or IRC #ffmpeg on irc.freenode.net. Include the log file “config.log” produced by configure as this will help solve the problem.

需要安装 yasm

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 
sudo make install

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