[Mp4-tech] Where can i find the whole code of mpeg-4 decode and encode.

[=?gb2312?B?u6rG5g==?=]

hi, 
    i am beginning to learn mpeg-4 just several days, and i want to anaylize some sample code so that i can grasp the mpeg-4 fast. but i can't find the whole code including the tutoril documents. i will appreciate if you can tell you. thanks a lot in advance!
    best wishes!
                    Eric
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡lhq haiersoft.com.cn
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2004-09-16