NTSC interlacing problems? color blurring effect around all moving objects?
 

Hi folks,

I know newbie questions are extremelly boring in general to answer, but... if anyone could please give me a helping hand on this subject, i would trully appreciate!


i have made a few VCDs with kvcd scripts, and all of them came out with the same problem:

1a - theres a very noticeable "color blurring" effect around all moving objects on screen. Still objects and background have excellent image quality, but if, for instance, you got an actor walking on the screen, theres a noticeable "ghost" of blurred colors attached to his whole body while he is moving.

One strange thing is that i DONT have this effect if the original is an animated cartoon DVD. Also, i get very little of this effect if i use X-Vcd resolution choice (704x480). Anything lower than that immediatly shows a lot of these "blurs".


I have a LOT of 352x240 low bitrate mpegs videos from Kazaa and NONE of them have such a bad image quality as my resulting kvcd encoded mpges. How is that?? A friend told me that converting from VHS to digital makes a better mpeg final quality. is that true??

I'm not sure if i managed to clearly explain the kind of "blurring contour effect" i'm getting. Its kind of hard to explain it in words, in english. if its not clear enough, please, let me know so i can try to post a link to screen captures here.

Thanks a lot in advance for any help!

mabhz

PEACE!!!!

Re: problems with "blurring contours" - HELP pleas
 

What is the script you use for making your KVCD ?

If you can, do this. That's help a lot.

Here's the script i make with FitCD (for avisynth) and i use on TMPEnc:

"LoadPlugin("D:\Program Files\DVD Tools\Plugins\MPEG2DEC.dll")

Mpeg2Source("D:\CD Images\Teletubies\Vobs\# 4\teletubies episode 4.d2v")
AssumeFrameBased.SeparateFields
BilinearResize(528,239,7,0,706,240).Weave
AddBorders(0,0,0,2)"

In this case, i'm trying to convert the original Vobs into a DVDSmall format.

I'll try to get some screen captures, but does this forum supports image attachments to images??

thanks for the reply!

PEACE

mabhz

Everything can come from the way you deinterlace your source. I'm not the best man for this but there are a lot of guys that can help you.

And yes, you can attach image if they are hosted on a public storage space.

Well as i assume you live in NTSC Land cause of your resizings.
I think you got an interlacing problem if this problem only occurs on MOVING scenes.

Well I'm not that conform refering deinterlacing "NTSC" Streams, PAL yes but NTSC not.

BUT ...where did you get this script?
Kick that "AssumeFrameBased" out!
Because IF your stream is interlaced (which I think it is) you CAN'T tell Avisynth that's not by adding "AssumeFrameBased"! And shurely not if afterwards performing an interlaced based resizing.

So try again your script like this and tell us if still there are these Blurring effects in moving scenes. After this some other NTSC Cracks can tell you how to do the correct NTSC Deinterlacing.


Mpeg2Source("D:\CD Images\Teletubies\Vobs\# 4\teletubies episode 4.d2v")
SeparateFields
BilinearResize(528,239,7,0,706,240).Weave
AddBorders(0,0,0,2)

Thanks a lot for the help....

well, i tried withitou the "AssumeFrameBased" and WITH "SeparateFields" but now i got another problem added to the image: there are odd flashing lines all around the moving objects on screen. i'm not an expert, but this actually looks like an interlacing problem, since i already had exactly this on a BugsBunny TinyToons DVD i ripped and a friend told me to fix the interlacing, and it worked fine.

Maybe i'm not explaining very clearly the "blurs" or effects that i get on my mpeg images... its kind of hard to explain it in english, but... try to think of "spots of colored dirt", "small spots of colored blurs", like an "aura" around the caracthers of the movie/show. i think i could say the image gets "crisp", if you know what i mean, and lacks definition and quality.

any more ideas??

thanks a lot for any help...

PEACE!!

mabhz

Well, as it maybe seems to be an NTSC interlacing problem, my recommendation to you is to rename the subject of this thread to:
"Maybe NTSC interlacing problems - anyone knows to handle it?"

This lets your thread be more "eye-catching" for the NTSC deinterlacing Cracks! :wink: