ffmpeg installation on ubuntu 12

install-notes.txt

sudo apt-get update
sudo apt-get -y install libtag1-dev autoconf automake build-essential libass-dev libgpac-dev \
  libsdl1.2-dev libtheora-dev libtool libvorbis-dev pkg-config texi2html zlib1g-dev -y
mkdir ~/ffmpeg_sources

#ysam
cd ~/ffmpeg_sources
wget http://www.tortall.net/projects/yasm/releases/yasm-1.2.0.tar.gz
tar xzvf yasm-1.2.0.tar.gz
cd yasm-1.2.0
./configure --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin"
make
make install
make distclean
export "PATH=$PATH:$HOME/bin"

#AAC audio encoder
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

#opus
cd ~/ffmpeg_sources
wget http://downloads.xiph.org/releases/opus/opus-1.1.tar.gz
tar xzvf opus-1.1.tar.gz
cd opus-1.1
./configure --prefix="$HOME/ffmpeg_build" --disable-shared
make
make install
make distclean

sudo apt-get install libmp3lame-dev -y

###
cd ~/ffmpeg_sources
wget http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2
tar xjvf ffmpeg-snapshot.tar.bz2
cd ffmpeg
PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig"
export PKG_CONFIG_PATH
./configure --prefix="$HOME/ffmpeg_build" --extra-cflags="-I$HOME/ffmpeg_build/include" \
   --extra-ldflags="-L$HOME/ffmpeg_build/lib" --bindir="$HOME/bin" --extra-libs=-ldl --enable-gpl \
   --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora \
   --enable-libvorbis --enable-nonfree
make
make install
make distclean
hash -r