This is a Heroku buildpack for using ffmpeg in your project.
It doesn't do anything else, so to actually compile your app you should use heroku-buildpack-multi to combine it with a real buildpack.
To use this buildpack, you should prepare .buildpacks file that contains this buildpack url and your real buildpack url.
$ ls
.buildpacks
...
$ cat .buildpacks
https://github.com/jwoodrow/heroku-buildpack-ffmpeg-x264-fdk_aac
https://github.com/heroku/heroku-buildpack-play
$ heroku create --buildpack https://github.com/ddollar/heroku-buildpack-multi
$ git push heroku master
...
You can verify installing ffmpeg by following command.
$ heroku run "ffmpeg -version"
This buildpack comes with ffmpeg configured like so:
./configure --enable-static \
--disable-shared \
--disable-asm \
--extra-libs="-L$LIBSS/lib" \
--extra-cflags="-I$LIBSS/include" \
--prefix=/app/vendor/ffmpeg \
--enable-libfdk-aac \
--enable-nonfree \
--enable-libx264 \
--enable-gpl
It also contains all prebuilt dependencies needed to run ffmpeg with x264 and fdk_acc.
Nothing else is needed.
https://github.com/shunjikonishi/heroku-buildpack-ffmpeg/blob/master/bin/compile#L10