Error LIBSWRESAMPLE_0 Compiling ffmpeg Kubuntu 12.04

Error LIBSWRESAMPLE_0 Compiling ffmpeg Kubuntu 12.04

i try to compile ffmpeg in ubuntu 12.04 with this tuto But i had a error
with a library so i use this to solve it:
sudo apt-get update
sudo apt-get -y install build-essential checkinstall git libfaac-dev
libgpac-dev \
libjack-jackd2-dev libmp3lame-dev libopencore-amrnb-dev
libopencore-amrwb-dev \
libsdl1.2-dev libtheora-dev libva-dev libvdpau-dev libvorbis-dev
libx11-dev \
libxfixes-dev texi2html yasm zlib1g-dev
and this
cd
git clone git://git.videolan.org/x264
cd x264
./configure --enable-static
make
sudo checkinstall --pkgname=x264 --pkgversion="3:$(./version.sh | \
awk -F'[" ]' '/POINT/{print $4"+git"$5}')" --backup=no --deldoc=yes \
--fstrans=no --default
then i have a problem with another library so i use a apt-get install to
add libgsm1-dev, then i could install it, but now when i tried to execute
it said:
ffmpeg: relocation error: /usr/local/lib/libavfilter.so.3: symbol
swr_get_class, version LIBSWRESAMPLE_0 not defined in file
libswresample.so.0 with link time reference
So i look for help, and tried
export LD_LIBRARY_PATH=/usr/local/lib
sudo ldconfig -v
but it didn't work, could you help me? Thz
PS:When i tried to install WINFF with synaptic or apt-get it said that it
will install ffmpeg.