[Mp4-tech] Hi, can anyone help me on the MoMuSys testing sequence?

[xu ce]

I have compiled the MoMuSys enc/dec in my Linux system. I found some yuv
files such as akiyo.yuv from the web to test. However, it refuses to
work because the akiyo.seg file is missing. Well, i wonder where could i
obtain this alpha plane information file? (previously i used Microsoft's
Codec under windows and there is no such .seg file requirement). I
searched through the web for a few hours already and could not find a
solution. Could anyone please suggest? 
You help is really appreciated.
Regards,
Xu Ce