[M4IF Technotes] DC prediction

[Ramkishor Korada]

Hi,
----- Original Message -----
From: <wuks   bhnec.nec.co.jp>
To: <technotes   lists.m4if.org>
Sent: Friday, May 24, 2024 6:28 AM
Subject: [M4IF Technotes] DC prediction
> 1) is there a code in the bitstream to flag DC prediction? In other
> words,in intra DC vlc, the DC of a intra MB are always coded in    DC
> prediction mode?
>

    There is no flag to indicate DC prediction direction. It is adaptively
decided depending on the correlation of DC coefficients in horizontal and
vertical direction.
> 2)what's use mcroblock's stuffing mode?
>

    To avoid VBV overflow at decoder.
> 3)the mcroblock number of the top_lest is 0 or 1? In the standard ,it's
> told 1, is right?
>

    It is 0
> thank for your help!
>

regards,
ramkishor
Architect - Video
Multimedia Technologies Division
Emuzed India
Bangalore
www.emuzed.com