[Mp4-tech] Re: [Mp4-tech ]question about mb_in_video_packet

[Ram]

Hi Matt,
Yes ,Pankaj is right. The MPEG4 standard document ISO14496-2 also clearly
indicates, how to retrieve 'MB in video packet'.
ram
On Jan 15, 2024 4:32 AM, pankaj bajpai <pankaj_bajpai_iet operamail.com>
wrote:
> Dear Matthew,
>
>  "mb_in_video_packet" is not a syntax element.
> It get computed while decoding first group (loop for dc_marker).
>
> You can calculate this by following way.
> Just count the number of mcbpc (excluding stuffing type) till
> you get dc_marker. This count will represent "mb_in_video_packet"
>
> bye
>
>
>
>
>
> > From: Matthew <kingshine.matthew gmail.com>
> > To: Mp4-tech lists.mpegif.org
> > Subject: [Mp4-tech] question about mb_in_video_packet
> > Date: Sun, 13 Jan 2024 17:26:00 -0800
>  >
> >
> > Hi, Dear all
> >
> >
> >
> > In the MPEG-4 video syntax, "data_partitioned_i_vop"
> >
> > There is a element "mb_in_video_packet", I don't know where this
> > element can be obtained,
> >
> > Is it in the system syntax or I can't compute it through other
> > syntax elelments.
> >
> >
> > Thanks
> >
> > Matthew
> >
>
>
> Pankaj Kumar Bajpai
> Mulitimedia Engineer
> India
>
>
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