How to compile ffmpeg with libfdk_aac in Ubuntu server 12.04 (does not work in other versions of ubuntu). See http://askubuntu.com/q/553688

do_this_manually.sh

### How to compile ffmpeg with libfdk_aac in Ubuntu server 12.04 (does not work in other versions of ubuntu). See http://askubuntu.com/q/553688

## install dependencies
# sudo apt-get update
# sudo apt-get -y install autoconf automake build-essential libass-dev libfreetype6-dev libgpac-dev libtheora-dev libtool libvorbis-dev pkg-config texi2html zlib1g-dev
# sudo apt-get install yasm
# sudo apt-get install libx264-dev
# sudo apt-get install unzip
# sudo apt-get install libmp3lame-dev
# sudo apt-get install libopus-dev

## As a normal user (does not need sudo)
# mkdir ~/ffmpeg_sources
# cd ~/ffmpeg_sources
# wget -O fdk-aac.zip https://github.com/mstorsjo/fdk-aac/zipball/master
# unzip fdk-aac.zip
# cd mstorsjo-fdk-aac*
# autoreconf -fiv
# ./configure --prefix="$HOME/ffmpeg_build" --disable-shared
# make
# make install
# make distclean
# cd ~/ffmpeg_sources
# wget http://webm.googlecode.com/files/libvpx-v1.3.0.tar.bz2
# tar xjvf libvpx-v1.3.0.tar.bz2
# cd libvpx-v1.3.0
# PATH="$PATH:$HOME/bin" ./configure --prefix="$HOME/ffmpeg_build" --disable-examples
# PATH="$PATH:$HOME/bin" make
# make install
# make clean
# cd ~/ffmpeg_sources
# wget http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2
# tar xjvf ffmpeg-snapshot.tar.bz2
# cd ffmpeg
# PATH="$PATH:$HOME/bin" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure --prefix="$HOME/ffmpeg_build" --extra-cflags="-I$HOME/ffmpeg_build/include" --extra-ldflags="-L$HOME/ffmpeg_build/lib" --bindir="$HOME/bin" --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
# PATH="$PATH:$HOME/bin" make
# make install
# make distclean
# hash -r
# echo "MANPATH_MAP $HOME/bin $HOME/ffmpeg_build/share/man" >> ~/.manpath
# . ~/.profile


### And now ~/bin/ffmpeg exists with libfdk_aac support!
# ffmpeg -i mp3_h264.mp4 -vcodec copy -acodec libfdk_aac videoUntouched_audioAac.mp4
# (old method, without libfdk_aac (worse))
# ffmpeg -i mp3_h264.mp4 -vcodec copy -acodec aac -strict experimental videoUntouched_audioAac.mp4