[M4IF Technotes] Ac prediction

[Ramkishor Korada]

Hi,
 When the block is not Intra (Inter), then they should be handled the same
way as blocks outside VOP or packet i.e., use zero values as predictors.
warm regards,
ramkishor
Architect - Video
Digital Media Technology Division
Emuzed Bangalore Division
IndiraNagar,Bangalore
www.emuzed.com
----- Original Message -----
From: "Jani Huoponen" <Jani.Huoponen   hantro.com>
To: <technotes   lists.m4if.org>
Sent: Monday, June 11, 2023 9:48 AM
Subject: [M4IF Technotes] Ac prediction
> Hi all,
>
> There seems to be one vague point in the Visual standard regarding the AC
> prediction, I would like to have your opinion on the interpretation of the
> standard.
>
> So the question is:
>
> What values are supposed to use in ac prediction if type of the prediction
> block (block 'A' or block 'C') is not intra? Standard does not seem to
> impose any restrictions on usage of inter blocks as ac predictor blocks
but
> video verification model seems to specify that they should be handled the
> same way as blocks outside the VOP or video packet (i.e. use zero values
as
> predictors instead of actual inter block ac coefficient values).
>
> BR, Jani
>
> ------------------------------------------------------------
> Jani Huoponen
> Engineering Manager, System Design
> Hantro Products Oy
> Nahkatehtaankatu 2, 90100 Oulu, Finland
> +358-40-5272676
> ------------------------------------------------------------
>
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