first you might want to read this forum Documentation , and learn How to post a question
please READ
http://www.linuxquestions.org/linux/...xQuestions_org
first
then
read the ffmpeg documentation
http://www.ffmpeg.org/documentation.html
it is a VERY VERY HARD program to build
-- very hard
on a scale from 1 to 10 -- it is a 9.5 in difficulty
Also what operating system are you using ?
what version of GCC ?
have you built or installed
ALL of the prerequisites that ffmpeg NEEDS
what have you done so far ?
where are you stuck ?
and the rest of the 20 questions game ....