I compiled ffmpeg, transcode, MPlayer without problems. I suppose you forgot some options?
I think it's better to download them all from
www.slacky.it I tested them and they are working smoothly.
If I remember correctly, those are the options for ffmpeg
./configure --prefix=/usr --enable-a52 --enable-faac --enable-mp3lame --enable-libogg --enable-vorbis --enable-xvid --enable-x264 --enable-faad --enable-gpl --enable-dc1394 --enable-x11grab --enable-faad --enable-libgsm --enable-shared --enable-pp --enable-pthreads
and transcode
./configure --prefix=/usr --sysconfdir=/etc -localstatedir=/var --enable-ogg --enable-vorbis --enable-libdvdread --enable-libdv --enable-libquicktime --enable-a52 --enable-sdl --enable-imagemagick --enable-mjpegtools --enable-libjpeg --enable-lzo
As you can see, you need many libraries like: a52, faac, mp3lame, libdvdcss e.t.c. All available at slacky.it