FFmpeg is a nice piece of human intelligence able to convert from almost everything to almost anything in video. I talked about it before, I won't talk too much about it. BUT, the executable I had made was flawed. Amongst its issues, there was no support for aac! So I spent more time on it and I put my comments. Still xvid and amr missing though. If you find it, please tell me! You can also download the command line executable.
1 Install lame
2 Install faac
tar -xf faac ./bootstrap chmod 755 bootstrap ./bootstrap ./configure make sudo make install
3 Install faad
tar -xf faad2.tar cd faad2 chmod +x bootstrap ./bootstrap ./configure cd libfaad make sudo make install
\4. Install x264
svn co svn://svn.videolan.org/x264/trunk x264 cd x264/ ./configure make sudo make install
\5. ~~You have to find the way to add amr_nb support by yourself, as well as xvid support, I'm sorry.~~
\6. Download and correct ffmpeg
cvs -z9 -d:pserver:firstname.lastname@example.org:/cvsroot/ffmpeg co ffmpeg cd ffmpeg/ ./configure --enable-mp3lame --enable-gpl --disable-vhook --enable-a52 --enable-faac --enable-faad --enable-pthreads --enable-x264
In libavutil/common.h there's a big piece of code to delete, which only works on Win32. It's a if loop. Try to compile: it comes as one of the very first errors.
Et voilà . Don't misunderstand me: due to the lack of documentation , it's taken me a small day to get to this point...