Linux ffmpeg编译踩坑

1、安装freetype字体库，avfilter添加文字水印的依赖项；

下载freetype：https://www.freetype.org/download.html；

配置、编译、安装、读取版本信息

./configure 
 make
 sudo make install

踩坑
1、gmake 错误

GNU make (>= 3.81) or makepp (>= 2.0) is required to build FreeType2.
Please try

  MAKE=<GNU make command name> ./configure

or

  MAKE="makepp --norc-substitution" ./configure

解决办法：

sudo apt install make

2、报错 no acceptable C compiler found in $PATH

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install build-essential

2、x264安装

下载x264https://www.videolan.org/developers/x264.html

配置、编译、安装

./configure 
 make
 sudo make install

踩坑：

1、提示缺失nasm

Found no assembler
Minimum version is nasm-2.13
If you really want to compile without asm, configure with --disable-asm.

解决办法：

执行sudo apt-get install nasm后，再进行配置

3、编译ffmpeg

下载    https://github.com/FFmpeg/FFmpeg 

配置、编译

./configure --prefix=/home/tal/Document/ffmpeg/FFmpeg-n4.3.1/build/ --enable-static --enable-shared --enable-libfreetype  --enable-gpl --enable-libx264 --enable-encoder=libx264 --enable-decoder=h264

make

踩坑：

1、ERROR: libx264 not found

解决办法：

编译安装 x264 时 增加选项 --enable-shared     

./configure --enable-shared