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

[Keling Fei]

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. 
  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 
"
is activated, but what is wrong ? 
  Would you please give me some suggestion.thanks.
  
Best Regards 

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