[M4IF Technotes] Some newbies questions

[Roland Bengtsson]

I have some very simple questions about MPEG-4.
1. I have found some source for MPEG-4 on http://megaera.ee.nctu.edu.tw/mpeg
    Is this the latest free software about MPEG-4?
2. What is the differens betwwen Microsoft-fdaml and MoMuSys-fdaml?
    Microsoft seems to be towards Windows and MoMuSys against Unix.
3. I downloaded the reference source from MS and compiled it in VC++.
    It compiled ok and the input from test-sequences worked well.
    But I imagine that I could have a MPEG-4 movie as input to the decoder.
    But the decoder has a cmp-file as input and a yuv-file as output.
    So my question is what is the difference between a cmp-file and a 
MPEG-4 file?
4. I have an idea to feed the decoder with a MPEG-4 stream containing a 
base layer
    and a enhancement layer. Then just handle the base layer for output 
because low
    bandwidth. Is there any software that show how this can be done?
I'm look forward to the answers!
Best regards Roland