Use ffmpeg on OSX Xcode Project for Mac

Question

I am planning to create a new app for personal use on my Mac that uses FFMPEG library, to store a feed from a RTSP IP camera.

Following this official installation procedure from FFMPEG I have manage to successfully achieve the following 2 steps:

To get ffmpeg for OS X, you first have to install ​Homebrew. If you don't want to use Homebrew, see the section below.

• ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Then:
- brew install automake fdk-aac git lame libass libtool libvorbis libvpx \ opus sdl shtool texi2html theora wget x264 xvid yasm

Question: My question here because I am confused, is how to import a library into Xcode so I can use it in the application I am about to build for my Mac. I can see plenty of GitHub projects related to FFMPEG with IOS/Android, but none for OSX.

All the FFMPEG commands under terminal are working fine, such as converting a video etc.

Answer 1

If you look in /usr/local/Cellar/ffmpeg you will find the actual ffmpeg package and everything in homebrew is just symbolic links to that. For example:

/usr/local/bin/ffmpeg -> ../Cellar/ffmpeg/3.0.2/bin/ffmpeg

Now, if you stay in that directory and do this, you will find all the pkgconfig configuration settings for the constituent parts of ffmpeg:

find . -name \*.pc

./lib/pkgconfig/libavcodec.pc
./lib/pkgconfig/libavdevice.pc
./lib/pkgconfig/libavfilter.pc
./lib/pkgconfig/libavformat.pc
./lib/pkgconfig/libavresample.pc
./lib/pkgconfig/libavutil.pc
./lib/pkgconfig/libpostproc.pc
./lib/pkgconfig/libswresample.pc
./lib/pkgconfig/libswscale.pc

That means you can now find the include path and library paths that you need to put in the Xcode settings. So, for example, if you want the includes for libavutil, you can do:

pkg-config --cflags libavutil

and it will tell you:

-I/usr/local/Cellar/ffmpeg/3.0.2/include

If you want the library settings for libavfilter, you can do:

pkg-config --libs libavfilter

and it will tell you

-L/usr/local/Cellar/ffmpeg/3.0.2/lib -lavfilter

So that is how you get the settings for the compiler/linker. Then you need to put them into Xcode, and I have described that here - look at the bit with the yellow, red and blue boxes.

Hope that helps. Oh, you need to do:

brew install pkg-config

first to get the pkgconfig binary.