记录一下，以免忘记
1.安装一些通用依赖
sudo apt install -y nasm yasm
sudo apt install -y libx264-dev libx265-dev libnuma-dev libvpx-dev libfdk-aac-dev libmp3lame-dev libopus-dev
sudo apt-get -y install autoconf automake build-essential libass-dev libfreetype6-dev libsdl2-dev libtheora-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev pkg-config texinfo zlib1g-dev
2.源码安装SDL2
下载SDL2的安装包，
Simple DirectMedia Layer - SDL version 2.0.22 (stable)
解压缩SDL2的安装包
./configure
make
sudo make install
3.安装ffnvvodec（GPU加速用，不安装的话，ffplay无法使用）
git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git
或者github的网站上下载GitHub - FFmpeg/nv-codec-headers: automatic mirror of https://git.videolan.org/?p=ffmpeg/nv-codec-headers.git
cd nv-codec-headers/
git checkout n9.1.23.3(我的机器的驱动是470.57.02，所以可以用9.1以上的版本，从nv-codec-headers里面的readme可以看最低支持的驱动号)
sudo make install && cd ..
4.安装ffmpeg
下载ffmpeg，解压缩
mkdir build
cd build
PKG_CONFIG_PATH=~/tools/nv-codec-headers:$PKG_CONFIG_PATH ./../configure --prefix=/usr/local/ffmpeg-4.4 --enable-shared --enable-ffplay --enable-cuda --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --enable-gpl --enable-libx264 --enable-libx265 --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libfdk-aac --extra-cflags=-I~tools/cuda-11.0/include --extra-ldflags=-L~/tools/cuda-11.0/lib64 --disable-x86asm
make
sudo make install
