ps: 从笔记中迁移至blog

版本概述

Windows 基于win10
Linux 基于CentOS 7.6

一.Windows安装笔记

1.下载安装

https://ffmpeg.org/download.html

2 解压缩，拷贝到需要目录，重命名

3 追加环境变量

 echo %PATH%setx /m PATH "%PATH%;F:\dev_tools\ffmpeg\bin"

4 重启cmd验证

ffmpeg -version

5.测试命令

查询所有设备

ffmpeg -list_devices true -f dshow -i dummy

查询具体设备信息, 如:摄像头

ffmpeg -f dshow -list_options true -i video="Integrated Camera"

二.Linux安装ffmpeg

1 下载

wget https://johnvansickle.com/ffmpeg/release-source/ffmpeg-4.1.tar.xz

2 解压&安装

ps: 如果需要安装x264 ,请跳过该步骤 直接安装yasm 和nasm

tar -Jxvf ffmpeg-4.1.tar.xz
cd ffmpeg-4.1
sudo ./configure --prefix=/usr/local/ffmpeg
sudo make & make install

2.1 发生错误： nasm/yasm not found

2.2 请先安装yasm

2.2.1 在线安装

yum install yasm

2.2.2 离线安装

rpm -ivh epel-release-7-13.noarch.rpm
rpm -ivh yasm-1.2.0-4.el7.x86_64.rpm
yasm --version

3 添加环境变量

sudo vi /etc/profile
export FFMEPG=/usr/local/ffmpeg
export PATH=${FFMEPG}/bin:${PATH}
source /etc/profile

4. 配置X264

4.1 安装nasm

4.1.1 在线安装

yum install build-essential nasm

4.1.2 离线安装

wget https://www.nasm.us/pub/nasm/releasebuilds/2.13.03/nasm-2.13.03.tar.gz
tar -zxvf nasm-2.13.03.tar.gz
cd nasm-2.13.03/
sudo ./configure --prefix=/usr/local/nasm && make
sudo make install
export PATH=/usr/local/nasm/bin:${PATH}
nasm -v 

4.2 安装x264

git clone https://code.videolan.org/videolan/x264.gitcd x264./configure --prefix=/usr/softinstall/x264/ --includedir=/usr/local/include --libdir=/usr/local/lib  --enable-shared --enable-static --disable-asmmake&& make install

4.3 重新编译ffmpeg 命令

./configure --prefix=/usr/local/ffmpeg --enable-gpl --enable-shared --enable-libx264
make clean
make && make install
export PATH=/usr/local/ffmpeg/bin:${PATH}

4.4 追加ffmpeg插件目录

vi /etc/ld.so.conf
/usr/local/x264/lib
sudo ldconfig

5. 测试视频压缩

ffmpeg -i rtsp://admin:12345@192.168.101.243 -c:a libfaac -ar 44100 -ab 48k -c:v libx264 -f flv rtmp://127.0.0.1:31935/live/video11