Distorted picture in Shrek

[AndyP]

Hi

Have just ripped Shrek (R2) and noticed on some frames (see attached from frame 43425) on the bottom left corner have some 'lines' that shouldn't be there. I have searched and found loads of Shrek problems related to the multiple angles but none like this. I have tried telecide to remove it (not that this is combing but I thought it might work). The frame is from VDub with the following avs script.

--
SetMemoryMax(40)
LoadPlugin("mpeg2dec.dll")
mpeg2source("D:\DVD\Shrek\Shrek.d2v")
--

Ripped with latest DVD Decrpyter, DVD2AVI 1.76

Anyone seen this and any ideas on how to get rid of it (apart from cropping the left side off)

If this is the wrong forum then I apologise I wasn't really sure were this goes.

Many Thanks

Andy

Picture attached

[sh0dan]

The JPEG is very hard compressed, so it's hard to judge.

It seems like an MPEG Decoder error, since it's limited to 8 or 16 pixel widths, but I cannot confirm without a better image. Have you tried another decoder?

[AndyP]

Many thanks for the reply. I read the thread about using PNG for pictures after I posted this (sorry). I have not yet tried another decoder. I will try Nic's new one when I get home. (and post a PNG image)

Kind Regards,
Andy

[AndyP]

Right, I can confirm it is due to trbarry's MPEG2DEC2. When I use that with idct=2 or 5 I get the problem. With the original MPEG2DEC it is fine. I tried to attech a png image but it is too large. I can confirm that the width of each line is 16 pixels. May I PM it to you (about 480k) if you still need it.

Thanks for your help :)

Andy

[sh0dan]

You should probably PM trbarry instead - I don't know much about MPEGDEC2, so you should probably have him look at it

[trbarry]

AndyP -

I'll take a look at it.

There was an early bug in IDCT=5 but that has been fixed for some months now. Could you confirm the bug exists for the combination of DVD2AVI & MPEG2DEC currently in:

www.trbarry.com/DVD2AVIT3.zip and
www.trbarry.com/MPEG2DEC2.zip

and if so, does it exist with just DVD2AVI preview mode (no crop or resize)?

- Tom