reference pace : on https://wiki.ubuntu.com/ffmpeg , there's a procedure for svn snapshots "Compiling ffmpeg from upstream svn snapshots"
open terminal and type this command with super user privilege
# apt-get install liba52-dev libdts-dev libgsm1-dev libvorbis-dev libxvidcore4 libxvidcore-dev libdc1394-22-dev libfaac-dev libmp3lame-dev libx264-dev libfaad-dev libtheora-dev libsdl1.2-dev
open terminal and type this command with super user privilege
# apt-get install liba52-dev libdts-dev libgsm1-dev libvorbis-dev libxvidcore4 libxvidcore-dev libdc1394-22-dev libfaac-dev libmp3lame-dev libx264-dev libfaad-dev libtheora-dev libsdl1.2-dev
| apt-get install liba52-dev libdts-dev libgsm1-dev libvorbis-dev libxvidcore4 libxvidcore-dev libdc1394-22-dev libfaac-dev libmp3lame-dev libx264-dev libfaad-dev libtheora-dev libsdl1.2-dev |