enable sout, cannot find encoder MPEG-4 Video

[jacobs1]

Hi,
I am building libvlc for android and I enabled sout but when I try to add sout transcode option I get this error:

cannot find encoder MPEG-4 Video
*** Your Libav/FFmpeg installation is crippled. ***
*** Please check with your Libav/FFmpeg packager. ***
*** This is NOT a VLC media player issue. ***
Streaming / Transcoding failed
It seems your Libav/FFmpeg (libavcodec) installation lacks the following encoder:
MPEG-4 Video.

how can I add mpeg4 encoder support ?

[Rémi Denis-Courmont]

Compile libavcodec with encoding support.

[jacobs1]

thanks for your reply.
How do I add encoding support, I am using source from git://git.videolan.org/vlc-ports/android.git.
I tried by changing the main configure.sh that didn't work. I guess its only options for libvlc.

Where do I change libavcodec options ?