ffmpeg4.2.2编译+ubuntu18.02
--prefix=/home/firefly/work/soft/install_ffmpeg4.2.2 --pkg-config-flags=--static --extra-cflags=-I/home/firefly/work/lib_build/include --extra-ldflags=-L/home/firefly/work/lib_build/lib --extra-libs='-lpthread -lm' --bindir=/home/server/bin --disable-shared --disable-ffplay --enable-ffmpeg --enable-pthreads --enable-static --enable-swscale --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --disable-libopus --disable-libvorbis --enable-libvpx --enable-libx264 --enable-pic --enable-nonfree
1、ERROR: libfdk_aac not found
wget https://downloads.sourceforge.net/opencore-amr/fdk-aac-2.0.1.tar.gz
./configure --prefix=/home/firefly/work/lib_build/
make && make install
2、报错：ERROR: libmp3lame >= 3.98.3 not found
wget https://nchc.dl.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz
./configure --prefix=/home/firefly/work/lib_build/
make && make install
3、libvpx enabled but no supported decoders found
https://codeload.github.com/webmproject/libvpx/tar.gz/v1.8.2 网页下载
./configure --prefix=/home/firefly/work/lib_build/
make && make install
4、ERROR: libx264 not found
git clone https://code.videolan.org/videolan/x264.git
./configure --prefix=/home/firefly/work/lib_build/
4.1 Minimum version is nasm-2.13
https://www.nasm.us/pub/nasm/releasebuilds/2.13/
./configure --prefix=/home/firefly/work/lib_build/
make && make install
export PATH=/home/firefly/work/lib_build/bin:$PATH
make && make install
（2）瑞星微3299+ubuntu18编译
在以上基础上添加
5、log中显示没有libass
git clone https://github.com/libass/libass.git
./autogen.sh
./configure
make && make install
5.1 configure: error: Package requirements (fribidi >= 0.19.0) were not met:
git clone https://github.com/libass/libass.git
./autogen.sh
./configure
make && make install
二、编译显卡
1、lspci | grep VGA
sudo vim /etc/modprobe.d/blacklist.conf
blacklist vga16fb
blacklist nouveau
blacklist rivafb
blacklist rivatv
blacklist nvidiafb
sudo update-initramfs -u
sudo apt-get install make //目前使用4.1版本
sudo reboot
sudo ./NVIDIA-Linux-x86_64-440.82.run
sudo ./cuda_10.2.89_440.33.01_linux.run
2、--prefix=/home/firefly/work/soft/install_ffmpeg4.2.2 --pkg-config-flags=--static --extra-cflags=‘-I/home/firefly/work/lib_build/include -I/usr/local/cuda/include’ --extra-ldflags=‘-L/home/firefly/work/lib_build/lib -L/usr/local/cuda/lib64’ --extra-libs='-lpthread -lm' --disable-shared --enable-ffplay --enable-ffmpeg --enable-pthreads --enable-static --enable-swscale --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --disable-libopus --disable-libvorbis --enable-libvpx --enable-libx264 --enable-pic --enable-nonfree --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp
make
3、ERROR: cuvid requested, but not all dependencies are satisfied: ffnvcodec
git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git
// 查看硬解码器
ffmpeg -codecs | grep cuvid
// 查看硬编码器
ffmpeg -codecs | grep nvenc
三、硬件转码
./bin/ffmpeg -hwaccel cuvid -c:v mpeg4_cuvid -i ribuluo.mp4 -c:v h264_nvenc -b:v 2048k -vf scale_npp=1280:-1 -r 29.97 -ab 128000 -ar 44100 -y out.mp4 //视频mpeg4编码
-hwaccel cuvid：指定使用cuvid硬件加速
-c:v mpeg4_cuvid：使用mpeg4进行视频解码
-c:v h264_cuvid：使用h264_cuvid进行视频解码
-c:v h264_nvenc：使用h264_nvenc进行视频编码
-vf scale_npp=1280:-1：指定输出视频的宽高，高-1代表按照比例自动适应
-b:v：指定输出视频的码率，即输出视频每秒的bit数
-ab bitrate 设置音频码率 （128000）
-ar freq 设置音频采样率（16000）
四、视频文件的编码格式
H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 ——》h264
MPEG-4 part 2 ——》mpeg4
五、ffmpeg使用需要安装指令
sudo apt-get install libsdl2-2.0
sudo apt-get install libsdl2-dev
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