[Mp4-tech] RE: some questions about H.264 standard!

[JelyZhu innosis.com.cn]

Hi Gary,
I think I have understood what you explained for me. Thank you very much.
I have another questions now.
1. I cannot understand the conception of HRD, SEI and VUI. I think they
have less relationship with the decoding process. Maybe they are some
functions for testing the decoder. Am I right?
2. Why do the border of intra macroblock need bigger value of BS. Would the
intra mode make more serious block effect? From the standard I cannot get
the reason of choosing different BS value according to different case.
Could you mind interpret it for me?
3. How do I get I_PCM macroblock? This case is so rare that I cannot test
the function of it.
Best Regards,
Jely