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Date Posted: 16:48:03 10/25/02 Fri
Author: Andy
Subject: W2k: DC10+ and Morgan Codec -> interlace problem?

Hi all,

I'm using my DC10+ (PAL-mode) to produce 720x540 avis which (after editing) I convert to MPEG2-files (using an aviSynth script for bordering/resizing and Cinemacraft 2.50 encoder), which I then author (Scenarist) and burn to DVD-R. This all works perfectly as long as I'm working under W98SE (except for the Scenarist part, which only runs under W2k). For your information (I know, very detailed :-), this is the AviSynth script I use under W98SE (obviously, the DC10+ codec outputs upside down, and the resized are designed such that no vertical distortion happens, but a horizontal resize plus bordering such that the 720x540 cropped picture has the same relative size):
AviSource("E:\test.avi")
FlipVertical()
BilinearResize(676,540)
AddBorders(22,16,22,20)
ResampleAudio(48000)
For CCE, I have to uncheck "Upper field first" to get the interlacing corrctly. Output is perfect.

Unfortunately I would prefer to work under W2k exclusively. It annoys me that I must always switch between the 2 OS. And unfortunately there's no support for the DC10+ MJPEG codec under W2k. Thw W298SE codec actually uses a hardware implementation which is built into the DC10+. So, I must change to a sofwtare codec.

The codec that seemed to work fine is the Morgan codec (v3.0.0.9). Unfortunately the final avi shows a very unstable picture on the TV. You do not notice the problem until you view the final DVD-R on the DVD. The problem is that the horizontal elements in your picture are unstable.... they jerk up and down. It is not a classical interlacing problem (I tried top- and bottom field settings inside CCE, I also tried TMPGEnc, they both show the same behaviour). Horizontal movements are ok, but vertical lines are not stable. I'm pretty sure it has to do with interlacing, but I can't find the problem. This is the AviSynth script I'm using under W2k (same, but without vertical flip):
AviSource("J:\test.avi")
BilinearResize(676,540)
AddBorders(22,16,22,20)
ResampleAudio(48000)
And in the Morgan settings I used the following checkboxes (I only type in the decomrpession part here):
(x) enabled
( ) fast integer
(x) integer
( ) float
( ) IJG Core (what the hell is that??)
(x) Support interleave
( ) invert field order
( ) fancy upsampling
(x) MMX
(x) 3DNow!
(x) 3DNow!+

Thanks for any help!

Andy

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