媒介
虽然市面上好多ffmpeg安装，但是有的人是跳过了一些依靠大概依靠库太老，亦大概是都选择的路径是默认路径，本篇安装相对比力完备、中途不会遇到杂七杂八问题（有解决方案）以及安装路径自由发挥。
备注：由于我用的都是root用户权限，所以至始至终不用sudo，各位需求不一，看个人
以下内容险些以FFMPEG_THIRD目次为基准，不要完全赋值我的路径，自己参考修改
1.下载ffmpeg
- git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg
个人目次放置（供参考）
- ├── ffmpeg_src //ffmpeg源码解压后目录
- ├── x264_src //x264源码解压后目录
- ├── x265_src //x265源码解压后目录
- ├── lame_src //libmp3lame源码解压后目录
- ├── nasm_src //nasm源码解压后目录
- ├── openssl //openssl安装目录
- ├── openssl_src //openssl源码解压后目录
- ├── rtmpdump_src //rtmp源码解压后目录
- └── ffmpeg_third //第三方库安装目录
- ├── bin
- ├── include
- ├── lib
- ├── man
- ├── sbin
- └── share
自己创建第三方依靠库安装目次FFMPEG_THIRD并且添加到编译环境变量中，进入运行用户下（选择很紧张，别到时候自己安装运行用户都不对应）的 .bashrc文件，在文件末了增加环境变量，末了source下就可用了，方便我们后续利用
- #vi ~/.bashrc
- ----------文件内------------
- .
- .
- .
- export FFMPEG_THIRD=/home/sulier/work/AudioVedio/ffmpeg_third
- export FFMPEG_THIRD_BIN=/home/sulier/work/AudioVedio/ffmpeg_third/bin
- export PATH=$FFMPEG_THIRD_BIN:$PATH
- export PKG_CONFIG_PATH=/home/sulier/work/AudioVedio/ffmpeg_third//lib/pkgconfig/:$PKG_CONFIG_PATH
- ----------------------------
- #source ~/.bashrc
由于我的是ubuntu的所以用apt-get命令（遇到[Y/N]输入y就行，这个不多说了）
- apt-get install libsdl2-dev
- apt-get install libsdl2-image-dev
- apt-get install libsdl2-mixer-dev
- apt-get install libsdl2-ttf-dev
- apt-get install libsdl2-gfx-dev
nasm（压缩文件）
x264编译错误如下
- root@ubuntu:/home/sulier/work/AudioVedio/x264_src# ./configure --prefix=$FFMPEG_THIRD --enable-shared --enable-static
- Found no assembler
- Minimum version is nasm-2.13
- If you really want to compile without asm, configure with --disable-asm.
- root@ubuntu:/home/sulier/work/AudioVedio/x264_src# nasm --v
- NASM version 2.11.08
然后在官网 NASM上下载，比如我用的是最新版本2.16.03目次路径在Index of /pub/nasm/releasebuilds/2.16.03
之后解压
- # tar -xf nasm-2.16.03.tar.gz
- # ./configure --prefix=$FFMPEG_THIRD
- # make
- # make install
下载x264
- git clone https://code.videolan.org/videolan/x264.git
- # ./configure --prefix=$FFMPEG_THIRD --enable-shared --enable-static
- # make
- # make install
原先的x265官网不让下载了
现在这个网站可以下载
- http://ftp.videolan.org/pub/videolan/x265/
由于x265用的是cmake、ccmake、numa，如果没安装，我们需要安装下
- # apt-get cmake
- # apt-get install cmake-curses-gui
- # apt-get install libnuma-dev
- # cd build/linux/
- # ./make-Makefiles.bash
- 需要修改CMAKE_INSTALL_PREFIX值（enter键进入编辑，esc进入命令模式）
- 为我们$FFMPEG_THIRD对应的值，
- 但是这里就不能用变量了，用绝对路径
- 之后编辑后c表示配置，然后g保存
- # make
- # make install
- root@ubuntu:/home/sulier/work/AudioVedio/x265_src/build/linux# make install
- [ 63%] Built target common
- [ 85%] Built target encoder
- [ 86%] Built target x265-shared
- [ 87%] Built target x265-static
- [100%] Built target cli
- Install the project...
- -- Install configuration: "Release"
- -- Installing: /home/sulier/work/AudioVedio/ffmpeg_third/lib/libx265.a
- -- Installing: /home/sulier/work/AudioVedio/ffmpeg_third/include/x265.h
- -- Installing: /home/sulier/work/AudioVedio/ffmpeg_third/include/x265_config.h
- -- Installing: /home/sulier/work/AudioVedio/ffmpeg_third/lib/libx265.so.179
- -- Installing: /home/sulier/work/AudioVedio/ffmpeg_third/lib/libx265.so
- -- Installing: /home/sulier/work/AudioVedio/ffmpeg_third/lib/pkgconfig/x265.pc
- -- Installing: /home/sulier/work/AudioVedio/ffmpeg_third/bin/x265
- 这里可以看到是不是我们想要的路径，哪怕错了可以再从./make-Makefiles.bash命令重新来下，编辑保存没错就是正确的
libmp3lame（压缩文件）
下载网址
- https://sourceforge.net/projects/lame/files/lame/
解压后进入解压目次，然后配置编译
- # ./configure --prefix=$FFMPEG_THIRD --enable-shared --enable-static
- # make
- # make install
下载地址
- https://github.com/openssl/openssl/releases/download/
- # apt-get install libssl-dev
- # ./config --prefix=/home/sulier/work/AudioVedio/openssl --openssldir=/home/sulier/work/AudioVedio/openssl -fPIC zlib
- # make
- # make install
- root@ubuntu:/usr/bin# mv openssl old_openssl
- # ln -s /home/sulier/work/AudioVedio/openssl/bin/openssl /usr/bin/openssl
- # ln -s /home/sulier/work/AudioVedio/openssl/include/openssl /usr/include/openssl
- # echo "/home/sulier/work/AudioVedio/openssl/lib64" >> /etc/ld.so.conf.d/openssl.conf
- # ldconfig
- root@ubuntu:/home/sulier/work/AudioVedio# openssl version
- OpenSSL 3.3.2 3 Sep 2024 (Library: OpenSSL 3.3.2 3 Sep 2024)
- # vi /usr/include/openssl/macros.h
- ----------------文件内----------------
- 130 # define OPENSSL_CONFIGURED_API 30300
- 131 # ifndef OPENSSL_API_LEVEL
- 132 # if OPENSSL_CONFIGURED_API > 0
- 133 # define OPENSSL_API_LEVEL OPENSSL_CONFIGURED_API
- 134 # else
- 135 # define OPENSSL_API_LEVEL \
- 136 (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
- 137 # endif
- 138 # endif
- 139
- 140 # if OPENSSL_API_LEVEL > OPENSSL_CONFIGURED_API
- 141 # error "The requested API level higher than the configured API compatibility level"
- 142 # endif
- --------------------------------------
rtmp（git下载）
官网：
- http://rtmpdump.mplayerhq.hu
- # git clone git://git.ffmpeg.org/rtmpdump
这里编译rtmp前有两个地方需要添加
第一处是代码目次下Makefile文件大概25行的样子LDFLAGS增加一个-ldl
- # vi Makefile
- 25 LDFLAGS=-Wall $(XLDFLAGS) -ldl
- # vi librtmp/Makefile
- 33 LIB_OPENSSL=-lssl -lcrypto $(LIBZ) -L/home/sulier/work/AudioVedio/openssl/lib64
- # make
- # make install prefix=$FFMPEG_THIRD
进入目次编译
- # cd ffmpeg_src
- # ./configure --prefix=$FFMPEG_THIRD --enable-shared --enable-static --enable-gpl --enable-pthreads --enable-libx264 --enable-libx265 --enable-libmp3lame --enable-librtmp --extra-cflags=-I$FFMPEG_THIRD/include --extra-ldflags=-L$FFMPEG_THIRD/lib
- # make
- # make install
- # echo "/home/sulier/work/AudioVedio/ffmpeg_third/lib/" >> /etc/ld.so.conf.d/ffmpeg.conf
- # ldconfig
- root@ubuntu:/etc/ld.so.conf.d# ffmpeg -version
- ffmpeg version N-116847-g4f7aeff Copyright (c) 2000-2024 the FFmpeg developers
- built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12) 20160609
- configuration: --prefix=/home/sulier/work/AudioVedio/ffmpeg_third --enable-shared --enable-static --enable-gpl --enable-pthreads --enable-libx264 --enable-libx265 --enable-libmp3lame --enable-librtmp --extra-cflags=-I/home/sulier/work/AudioVedio/ffmpeg_third/include --extra-ldflags=-L/home/sulier/work/AudioVedio/ffmpeg_third/lib
- libavutil 59. 35.100 / 59. 35.100
- libavcodec 61. 11.100 / 61. 11.100
- libavformat 61. 5.101 / 61. 5.101
- libavdevice 61. 2.100 / 61. 2.100
- libavfilter 10. 2.102 / 10. 2.102
- libswscale 8. 2.100 / 8. 2.100
- libswresample 5. 2.100 / 5. 2.100
- libpostproc 58. 2.100 / 58. 2.100
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