Xcode安装配置ffmpeg开发环境

在Mac平台上，下载安装ffmpeg
配置ffmpeg在Xcode的开发环境

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下载ffmpeg

1. 下载ffmpeg

   ➜  ~ brew install ffmpeg

2. 查看版本

   ➜  ~ ffmpeg -version
   ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers

3. 查看ffmpeg详细资信息

   ➜  ~ brew info ffmpeg
   ffmpeg: stable 3.4.2 (bottled), HEAD
   Play, record, convert, and stream audio and video
   https://ffmpeg.org/
   /usr/local/Cellar/ffmpeg/3.4.2 (248 files, 50.9MB) *
     Poured from bottle on 2018-08-18 at 19:01:35
   From: https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git/Formula/ffmpeg.rb
   ==> Dependencies
   Build: nasm ✘, pkg-config ✔, texi2html ✘
   Recommended: lame ✔, x264 ✔, xvid ✔
   Optional: chromaprint ✘, fdk-aac ✘, fontconfig ✘, freetype ✘, frei0r ✘, game-music-emu ✘, libass ✘, libbluray ✘, libbs2b ✘, libcaca ✘, libgsm ✘, libmodplug ✘, librsvg ✘, libsoxr ✘, libssh ✘, libvidstab ✘, libvorbis ✘, libvpx ✘, opencore-amr ✘, openh264 ✘, openjpeg ✘, openssl ✔, opus ✘, rtmpdump ✘, rubberband ✘, sdl2 ✘, snappy ✘, speex ✘, tesseract ✘, theora ✘, two-lame ✘, wavpack ✘, webp ✘, x265 ✘, xz ✘, zeromq ✘, zimg ✘
   ==> Options
   --with-chromaprint
   	Enable the Chromaprint audio fingerprinting library
   --with-fdk-aac
   	Enable the Fraunhofer FDK AAC library
   --with-fontconfig
   	Build with fontconfig support
   --with-freetype
   	Build with freetype support
   --with-frei0r
   	Build with frei0r support
   	
   ......
   
   --without-xvid
   	Disable Xvid MPEG-4 video encoder
   --HEAD
   	Install HEAD version

4. 查看下载后的路径，从上面看就可以做知道，默认路径为

   /usr/local/Cellar/ffmpeg

导入到Xcode

1. 新建Command Line Tool项目

   

2. 导入头文件

   点击项目名—> 右侧Build Settings —> 下拉找到Search Paths（也可以在搜索框直接搜索）—> 点击Header Search Paths—>输入头文件路径/usr/local/Cellar/ffmpeg/3.4.2/include

   

3. 导入库文件

   切换Build Phases的tab—>Link Binary With Libraries—>拖拉/usr/local/Cellar/ffmpeg/3.4.2/lib中的.a库到其中

   

   

   切换回Build Settings的Search Paths中的Library Search Paths，可以看到内容为/usr/local/Cellar/ffmpeg/3.4.2/lib

4. 查看效果，输出版本号

   #include <stdio.h>
   #include <libavcodec/avcodec.h>
   
   int main(int argc, const char * argv[]) {
       // insert code here...
       printf("ffmpeg version = %s\n", av_version_info());
       return 0;
   }
   
   // output
   // ffmpeg version = 3.4.2