环境

ubuntu16.04 cuda8.0 cudnn7 geforce gtx 1080 ti

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ffmpeg的硬编码

nvidia

1. h264_nvenc
2. hevc_nvenc wrappers

硬解码

1. cuvid
2. NVDEC

版本需要https://developer.nvidia.com/ffmpeg

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支持情况

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请参照 https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

编译

1. 卸载x264 ffmpeg
   sudo apt-get -y remove ffmpeg x264 libx264-dev
2. 卸载之前编译的x264

make uninstall  ##删除由make install命令安装的文件
make clean  ##只删除make时产生的临时文件
make distclean  ##同时删除configure和make产生的临时文件

官网上的步骤https://developer.nvidia.com/ffmpeg

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3. 安装ffnvcodec

   
   
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   4.安装nasm

tar -zxvf nasm-2.15.tar.gz
cd nasm-2.15
./configure -prefix=/storage/lss/ffmpegbuild/ # 自己的路径
make
sudo make install 

5. 安装libx264

cd x264
./configure --prefix=/storage/lss/ffmpegbuild/ --enable-static --enable-shared
make
sudo make install

6.安装yasm

tar xzvf yasm-1.3.0.tar.gz
cd yasm-1.3.0
/configure --prefix=/storage/lss/ffmpegbuild
make
make install

7. 安装x265
   https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
   我没有完全按照官网的命令

sudo apt-get install libnuma-dev 
git clone https://bitbucket.org/multicoreware/x265_git.git 
cd x265_git/build/linux
cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=/storage/lss/ffmpegbuild ../../source
make 
sudo make install

8. 安装ffmpeg
   https://developer.nvidia.com/ffmpeg

git clone https://git.ffmpeg.org/ffmpeg.git
 ./configure --prefix=/storage/lss/ffmpegbuild/ --enable-libx264 
--enable-libx265 
--enable-cuda-sdk 
--enable-cuvid 
--enable-nvenc 
--enable-nonfree
 --enable-gpl 
--enable-libnpp 
--extra-cflags=-I/storage/lss/ffmpegbuild/include 
--extra-ldflags=-L/storage/lss/ffmpegbuild/lib  
--extra-cflags=-I/usr/local/cuda-8.0/include 
--extra-ldflags=-L/usr/local/cuda-8.0/lib64
# 报错1找不到x264或者npp
# 原因： x264或者cuda的路径没写对
# 报错2ERROR: x265 not found using pkg-config
# 解决方法：在ffmpegbuild/lib/下面找到了一个pkgconfig，试着导入，成功解决
export PKG_CONFIG_PATH=/storage/lss/ffmpegbuild/lib/pkgconfig
# 警告 WARNING: Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead
#替换configure
./configure --prefix=/storage/lss/ffmpegbuild/ --enable-libx264 --enable-libx265 --enable-cuda-nvcc --enable-cuvid --enable-nvenc --enable-nonfree --enable-gpl --enable-libnpp  --extra-cflags=-I/storage/lss/ffmpegbuild/include --extra-ldflags=-L/storage/lss/ffmpegbuild/lib  --extra-cflags=-I/usr/local/cuda-8.0/include --extra-ldflags=-L/usr/local/cuda-8.0/lib64
make
# 报错 Makefile:117: recipe for target 'ffmpeg_g' failed
# 解决方法：make clean一下
make clean
# 然后重新configure
#接着
make -j 4
sudo make install

由于本机上有一个ffmpeg，需要把环境变量变成新编译的这个，所以修改环境变量，把路径改成自己的/storage/lss/ffmpegbuild

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测试

1. 将MP4转化为flv成功

ffmpeg -i orange.mp4 -c:v libx264 output.flv

2. 调用265成功

ffmpeg -i orange.mp4 -c:v libx265 -c:a copy output.mp4

2. 使用硬编码

ffmpeg -i orange.mp4 -c:v h264_nvenc output.mp4
报错

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git checkout n3.4

重新编译
编译的过程中会报错，我搜了一下，有人说可能也是版本的问题，所以又换了一个版本 n3.4.3重新编译 编译成功

4. 使用新版本的ffmpeg调用硬编码

ffmpeg -i orange.mp4 -c:v h264_nvenc output.mp4
成功,查看gpu调用情况，nvidia-smi,发现确实调用了gpu

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重新编译ffmpeg使其支持ffplay

#安装包
sudo apt-get install libsdl-image1.2-dev
sudo apt-get install libsdl-mixer1.2-dev
sudo apt-get install libsdl-ttf2.0-dev
sudo apt-get install libsdl-gfx1.2-dev

官网下载sdl
https://www.libsdl.org/download-2.0.php

解压：tar -zxvf SDL2-2.0.12.tar.gz
cd SDL2-2.0.12
./configure --prefix=/storage/lss/ffmpegbuild
make
make install

配置ffmpeg

./configure --prefix=/storage/lss/ffmpegbuild/ --enable-libx264 --enable-libx265 --enable-cuda-sdk --enable-cuvid --enable-nvenc --enable-nonfree --enable-gpl --enable-libnpp  --extra-cflags=-I/storage/lss/ffmpegbuild/include --extra-ldflags=-L/storage/lss/ffmpegbuild/lib  --extra-cflags=-I/usr/local/cuda-8.0/include --extra-ldflags=-L/usr/local/cuda-8.0/lib64 --enable-sdl
make -j 4
sudo make install