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

[pankaj bajpai]

Dear Gururaj,
In the sequence header, it is the original size ie non-padded size
that need to be put.
with regards
> ----- Original Message -----
> From: "Gururaj Bhat" <bs.guru gmail.com>
> To: "pankaj bajpai" <pankaj_bajpai_iet operamail.com>
> Subject: Re: [Mp4-tech] [video]Padding in non standard videos
> Date: Wed, 14 Feb 2024 11:21:39 +0530
> 
> 
> 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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> >
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>

Pankaj Kumar Bajpai
Mulitimedia Engineer
India
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