[Mp4-tech] Regarding Luma16DC and Luma16AC

[Ramya Desai]

Hi all,

Currently I am trying to understand JM software for my project.

While doing so, I observed the following things.

1)

For some Macro blocks I am getting Luma, ChromaDc and ChromaAC coefficients.

For other Macro blocks, I am getting Luma16DC, Luma16AC and Chroma.

What is difference of these coefficients? And how to stop Luma16DC and
Luma16AC coefficients?

2)

I am not getting all the 16, 4x4 blocks for my CAVLC (Depending on CBP value).

In this case, what values shall I take for nA and nB in the
calculation of nC in "TrailingOnes" and "Total Coeffs" in lookup
table.


Thanks in Advance,

Regards,

RD