[XviD-devel] Problem about Decoding 704*576 resolution P Frames

[Christoph Lampert]

Hi,

first of all, please give us some crucial information:
What kind of stream is this, where does it come from.=20
Is it generated with XviD or with another codec?=20

gruel

P.S. First minor thing: Your stream cannot really be Simple Profile=20
at Level 2, because that only supports resolution up to CIF (352x288),
see Table N-1. That shouldn't cause problems on the XviD side, but=20
possibly at the encoder?

On Mon, 22 Nov 2004, Keling Fei wrote:
> Hi, Dear developer
>   When I using source program of Xvid 1.02 to decode
> mpeg4 video file,in my case:Simple Profile L2; the
> resolution is PAL D1 704*576.  The P frame always has
> smeared effect, it seems like the motion estimation or
> compensation has some problem(for I noticed that the
> smeared part mostly is the moving part). While the I
> frame is always ok. In addition, the distance between
> P frame and I frame further, the effect blurred more.=20
>   But in resolution of PAL CIF 352*288 ,P frame is
> clear, all are right.
>   I have been confused  about this problem for a long
> time, but not sure if it is a bug of Xvid , or just
> some other problem.
>   When tracing the decoding procedure of P frame, I
> noticed that in 704*576 resolution, the "interlacing=20
> "
> is activated, but what is wrong ?=20
>   Would you please give me some suggestion.thanks.
>  =20
> Best Regards=20
>=20
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