"red cap" problem

[user]

Hi,

Using GK 0.26 I found a problem with 2 movies, I have encoded.

In both movies, the main actors weared red caps.
(but with all other red areas, it gave "same" annoying artifact in those 2 movies).

In preview you were able to see the problem, too.

Every red area has got a red surrounding, which is annoying , of course.


I tried all possibilites of resizing, bicubic, sharp, neutral, soft, bilinear, all, I could find in Gknot.

source res. was something with 720x756, resized to about 544x350, but even resizing to 720x576 resulted to same additional red areas around red things.


1 problem movie was PAL, 16:9, progressive,

the other was PAL 4:3, interlaced.

For the interlaced movie I used deinterlacing in GKnot, of course, not the fast method, due to the bug.
I go mostly for High quality, time is not (so) important.


So,
then I tried Flask.
I configured flask by that way, that flask does nothing to video.
All resizing (and deinterlacing in that one case), was done by DivX 5.02 pro (of course I used this same encoder in Gknot).

Surprise:

NO RED additional areas around red things !!!

Fine picture.


So my Conclusion:

Could it be, that avisynth as resizer/franmeserver (in GKnot) is not the best ?

Could GKnot be reprogrammed, so that GKNot passes the parameters of cropping/resizing through to DivX-encoder ?


Or Have I forgotten a setting in GKnot ?

[The Edge]

Don't blame the avisynth frameserver within GKnot just yet.
Maybe it's DVD2AVI?
Open your DVD2AVI project file wth VFAPI and see if the redness remains?

Edge

[user]

hmm,
I converted the *.d2v file of that interlaced movie with vfaepi converter 1.04 to *.avi.

And viewed it with F3.

I would say, that there is soemtimes a very small red surrounding around those red things, but not that annoying, so I conclude it is not dvd2avi, perhaps I *think* I watch here a little extra-red due to interlaced.

I would say, the problem exists/develops after resizing, but DVd2avi is a possibility, too, perhaps increased by later resizing, or deinterlacing/resizing.



Edit:




I should add, that I encoded both movies to SVCD, too.

by the method via dvd2avi, *.d2v, vfapi converter, Virtualdub resizing -> real avi with Leadtools mjpeg filter, this real avi feeded into CCE 2.62 -> annoying red caps (already in real avi).


Yes, so it it can be DVd2avi, or resizer in Virtualdub, avisynth ?!

[Soulhunter]

Hi user !

You shoul read this two Thread called "Compression of Red and Dark Orang" and "Something Wrong With The Colors!" Maybe it helps !

Heres the adresses: > http://forum.doom9.org/showthread.php?threadid=38304 <
And the scond one: > http://forum.doom9.org/showthread.php?s=&threadid=57025 <

So, post back!

Bye