[Mp4-tech] [video]Padding in non standard videos

[Gururaj Bhat]

Hi Pankaj,
Thanks for your answer.
I have one more doubt.Suppose it is padded,then what is the frame size that
has to be incorporated in the header of the encoded file?is it the original
size or the padded size?
Suppose the padded size is included,then is there any way for the decoder to
know that the video is padded,and how much?
Thanks in advance.
On 2/14/07, pankaj bajpai <pankaj_bajpai_iet operamail.com> wrote:
>
> Dear Gururaj ,
>
> Yes encoder need to take care of padding. This is because the DCT is
> performed on the 8x8 blocks. SO for border MBs, if you dont do padding,
> there will not be sufficient elements to perform DCT.
>
> With regards
>
>
> > From: Gururaj Bhat <bs.guru gmail.com>
> > To: mp4-tech lists.mpegif.org
> > Subject: [Mp4-tech] [video]Padding in non standard videos
> > Date: Tue, 13 Feb 2024 16:17:03 +0530
> >
> >
> > Hi all,
> >
> > I have a case in which the encoded mpeg4 video is of size 176*140.
> > Since the macroblock size is 16*16,140/16 is not an integer.
> > So,does encoder need to take care to pad the video frame while encoding?
> > or is it the duty of the decoder?
> >
> > regards,
> > Gururaj Bhat
> >
>
>
>
> Pankaj Kumar Bajpai
> Mulitimedia Engineer
> India
>
>
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