What are those lines?

NicholasDWolfwood · Post by **NicholasDWolfwood** » Mon Apr 14, 2003 8:35 pm

Chroma=true : Turn's chroma on
Blend=false : Don't know what it does, I believe it stops colour blending
Post=false : Turns off the Decomb postprocessing (Speeds up Teleciding)

the Black Monarch · Post by **the Black Monarch** » Wed Apr 16, 2003 1:17 am

NicholasDWolfwood wrote:Chroma=true : Turn's chroma on)

LOL. That was helpful

NicholasDWolfwood wrote:Blend=false : Don't know what it does

BWA HA HA HA that was REALLY helpful.

NicholasDWolfwood wrote:Post=false : Turns off the Decomb postprocessing (Speeds up Teleciding)

And Decomb postprocessing does what exactly...?

AbsoluteDestiny · Post by **AbsoluteDestiny** » Wed Apr 16, 2003 2:46 am

the Black Monarch wrote:
NicholasDWolfwood wrote:Chroma=true : Turn's chroma on)
LOL. That was helpful

It improves detection of combed frames by looking at both the luma AND chroma aspects of the video.

the Black Monarch wrote:
NicholasDWolfwood wrote:Blend=false : Don't know what it does
BWA HA HA HA that was REALLY helpful.

If a frame needs deinterlacing because a FILM frame can't be recovered then it can use either blending or interpolation to reconstruct the frame. Interpolation can be better but in most circumstances blend will be less ugly.

the Black Monarch wrote:
NicholasDWolfwood wrote:Post=false : Turns off the Decomb postprocessing (Speeds up Teleciding)
And Decomb postprocessing does what exactly...?

Decomb looks for FILM frames... if there isn't one to be found for this set of fields then the frame needs deinterlacing. Postprocessing does this. If you turn it off there is a chance that you will still get interlaced frames. It can be turned off on sources with a very very clean telecine but it's not advisable to do it anywhere else.

RadicalEd0 · Post by **RadicalEd0** » Wed Apr 16, 2003 2:58 am

you could also try
decimate(mode=2,quality=3)
to up the quality of the frame decimation and sacrifice some speed

the Black Monarch · Post by **the Black Monarch** » Wed Apr 16, 2003 12:11 pm

AD, if I understand you correctly, then you can tell AVIsynth "if you can IVTC, do it; otherwise, deinterlace." I don't suppose that kind of command structure would deinterlace the Evangelion series DVDs...

trythil · Post by **trythil** » Wed Apr 16, 2003 1:02 pm

the Black Monarch wrote:AD, if I understand you correctly, then you can tell AVIsynth "if you can IVTC, do it; otherwise, deinterlace." I don't suppose that kind of command structure would deinterlace the Evangelion series DVDs...

Actually, logically, it would. It's a pretty simple conditional.

AbsoluteDestiny · Post by **AbsoluteDestiny** » Wed Apr 16, 2003 1:18 pm

You sort of can tell it that but there's no way at present to have the frame decimation element conditional too - so you might as well do it manually.

Decomb tries to recover the original frames, any it can't it deinterlaces by default. However the decimation can lead to jerkyness, which is why full deinterlacing is prefereable.