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ubuntu18.04下编译ffmpeg

所有安装目录 /usr/local

1.nasm编译器编译

(nasm-2.13.03解包)

./configure --prefix=/usr/local

make -j4

sudo make install

注意：能检测到可以不用设置下面的环境。

安装完成后，为了系统能自动找到nasm程序，我们需要配置下环境变量。步骤如下：

输入命令：sudo vim /etc/profile，在文件末尾加入

export NASM_HOME=/usr/local/nasm

export PATH=${NASM_HOME}/bin:$PATH

export LD_LIBRARY_PATH=${NASM_HOME}/bin:$LD_LIBRARY_PATH

2.SDL(SDL2-2.0.10解包) sudo apt-get install xorg-dev

cmake直接编译(注意勾选静态编译 取消掉动态库)

make -j4

sudo make install

3.x264    -fPIC

git clone https://code.videolan.org/videolan/x264.git

./configure --prefix=/usr/local --enable-pic --enable-strip --enable-static --disable-shared

make -j4

sudo make install

4.x265

git clone https://bitbucket.org/multicoreware/x265_git.git

cmake直接编译(注意勾选静态编译)

make -j4

sudo make install

5.ffmpeg编译

(先确定安装好apt-get install libasound2-dev libpulse-dev)

生成库

make -j4

sudo make install

FFmpeg编译后产生的FFmpeg和FFmpeg_g有什么区别

_g一般是里面带了debug信息，方便调试的(比如单步调试)

//下面是关闭asm编译的

./configure --enable-static --disable-shared --disable-yasm --disable-x86asm --enable-libx264 --enable-libx265 --enable-sdl2 --enable-gpl --prefix=/usr/local/

//下面是打开多线程支持ubuntu通用

./configure --enable-static --disable-shared --enable-libx264 --enable-libx265 --enable-sdl2 --enable-pthreads --enable-pic --enable-gpl --prefix=/usr/local/

//树莓派3b

./configure --enable-static --disable-shared --enable-libx264 --enable-libx265 --enable-sdl2 --enable-pthreads --enable-gpl --enable-mmal --enable-omx --enable-omx-rpi --enable-pic --extra-ldflags=-latomic --pkg-config-flags="pkg-config --static" --prefix=/home/pi/dev/ffmpeg-4.4.1-dev/

./configure --arch=armel --target-os=linux --enable-static --disable-shared --enable-gpl --enable-libx264 --enable-sdl  --enable-nonfree --enable-omx --enable-omx-rpi --enable-encoder=h264_omx --enable-mmal --enable-hwaccel=h264_mmal --enable-decoder=h264_mmal

//NVIDIA

1.下载并安装ffnvcodec：

git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git

cd nv-codec-headers && sudo make install

2.下载最新的FFmpeg或libav源代码

git clone https：//git.ffmpeg.org/ffmpeg.git[Libav：https：//github.com/libav/libav]

3.从NVIDIA网站下载并安装兼容的驱动程序并安装CUDA工具包CUDA工具包

4.ffmpeg命令

./configure --enable-cuda-sdk --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64

5.测试FFmpeg，请尝试以下示例命令行进行1：2转码

ffmpeg -y -hwaccel cuvid -c:v h264_cuvid -vsync 0 -i <input.mp4> -vf scale_npp=1920:1072

-vcodec h264_nvenc <output0.264> -vf scale_npp=1280:720 -vcodec h264_nvenc <output1.264>

//jetson-TX2(下载jetson-ffmpeg补丁)

./configure --enable-static --disable-shared --enable-nvmpi --enable-libx264 --enable-libx265 --enable-sdl2 --enable-pthreads --enable-gpl --enable-pic --prefix=/usr/local/

MSYS2下编译

MSYS2静态/动态编译

./configure --enable-static --disable-shared --disable-debug --enable-sdl2 --enable-gpl --enable-libx264 --enable-libx265 --enable-w32threads --disable-pthreads --enable-memory-poisoning --enable-version3 --disable-iconv --disable-bzlib --disable-zlib --disable-lzma --prefix=/home/AGAN/ffmpeg-4.4.1-dev

./configure --enable-shared --disable-debug --enable-sdl2 --enable-gpl --enable-libx264 --enable-libx265 --enable-w32threads --disable-pthreads --enable-memory-poisoning --enable-version3 --disable-iconv --disable-bzlib --disable-zlib --disable-lzma --prefix=/home/AGAN/ffmpeg-4.4.1-devdll

msvc 32/64静态/动态编译

./configure --toolchain=msvc --enable-static --disable-shared --disable-debug --enable-gpl --enable-sdl2 --enable-libx264 --enable-libx265 --enable-w32threads --prefix=/home/AGAN/ffmpeg-4.4.1

./configure --toolchain=msvc --enable-shared --disable-debug --enable-gpl --enable-sdl2 --enable-libx264 --enable-libx265 --enable-w32threads --prefix=/home/AGAN/ffmpeg-4.4.1