Help With GNott Settings / Dvd2Avi

[lw3der]

The source I have is a dvd of a either video or film camera showing a graphics tutorial

Dvd2avi says the following

Aspect Ratio : 4:3

Frame Rate : 29.970 fps

Video Type : Ntsc

Frame Type : Interlaced

According to the divx digest guide, If the Video Type is FILM for less than 90% or is NTSC the movie was most likely taken from a TV source, and this require IVTC conversion

The guide also says If the "Frame Type" is "Interlaced", then you need to enable "Fast Deinterlace" here - otherwise, set it to "None

Ok, fine ... when I click on Inverce Telicine in GNott it says, it must not be used for material that is recorded with video or tv cameras or interlaced material ... it goes on to say a more reliable way is to use Force Film in dvd2avi

I have read the doom9 guide and I am even more confused. I am not using the robot4rip method but rather the all Gnott method

I have also read the dvd2avi sticky

Can someone please tell me what to do

On a side note, I made a d2v with no field operations and opened it in GNott and saw no problems


Thanks

[manono]

Hi and Welcome to the Forum-

It definitely can't be Force Filmed. You didn't give enough information to determine whether or not it can be IVTC'd and returned to 23.976fps, or must remain at 29.97fps and just deinterlaced. But if you'll work your way through the the DVD2AVI-IVTC Tutorial (http://www.doom9.org/ivtc-tut.htm), you'll learn how to find out what to do with it in three different places.

[lw3der]

HI

What information do you need ...

I have read that utorial several times and I still can not determine what I need to do

Can you please tell me

[manono]

Hi-

On a side note, I made a d2v with no field operations and opened it in GNott and saw no problems

OK, here's what you do. You said you had opened it in GKnot, but saw no problems. But if you had read and understood the sticky, you would have learned what to do (yeah, I know it's big, but it has good information about other things also, that you'll need to know). Find a place in the movie where there's movement/action. Then take that .d2v which you opened in GKnot (which you made WITHOUT Force Film enabled, that is, with No Field Operation-it should say 29.97fps after you open it), and advance frame by frame. If, out of every 5 frames, you see 2 that are interlaced, and 3 that are Progressive (not interlaced), then it has been telecined, and you can apply IVTC. If, on the other hand, all 5 frames are interlaced, then it has been created with a video camera, and must be kept at 29.97fps and just deinterlaced. Examine the frames at several places to be sure it's the same everywhere.

I hope that helps (I sent you an e-mail also, saying the same thing). Let us know how it goes. Good Luck.

[lw3der]

I do ot see any artifacts anywhere

There is hardly any motion is this dvd, it just showing a guy demonstrating how to work in a graphics program

S you are saying just click field deinterlace in the field operations and I am done



Thanks

[N_F]

If you are absolutetly certain you don't see any combing anywhere and no duplicate frames then just leave it as it is, no deinterlace of IVTC. You may want to throw in fielddeinterlace(full=false) just to be on the safe side though (select fielddeinterlace and then edit the avs-script).

[lw3der]

Hi

Thanks for the reply

I am encoding now with none selcted and see how it goes

When I click field deinterlace the avs un marks

LoadPlugin("C:\PROGRA~1\GORDIA~1\decomb.dll") but where and how exactly do I edit and put full = false and what does that mean



Thanks

[N_F]

It also unmarks a row "Fielddeinterlace" a bit down. If you edit this to "Fielddeinterlace(full=false)" only the frames detected as interlaced will be deinterlaced.

I've never seen or even heard of this combination you seem to have... if you didn't sound so certain I'd believe you made a mistake. Let us know how it works out.

[lw3der]

The source is just a video of a tutorial in a 3d program

I wish there was an option in Gnott to do a full render of a ten minute sequence or so, this way I do not have to wait till the two and half hour video finishes

[N_F]

Yeah, but a DVD still needs to follow certain standards (though I do not know which they are and probably wouldn't understand 80% of them anyway9.

[N_F]

Originally posted by lw3der
I wish there was an option in Gnott to do a full render of a ten minute sequence or so, this way I do not have to wait till the two and half hour video finishes

While GKnot can't do this for you, it's not that hard doing it yourself. Add or edit the trim() option and then make sure the bitrate you use is the same as it would be for the whole movie.

Perhaps not trivial if you're new to GKnot and Avisynth, but definitely doable.

[manono]

Hi-

I just got back. And N_F pretty much said it all already. If the movement is so slow that you see no interlacing at all (kind of hard to believe when DVD2AVI shows it as NTSC-Interlaced), then you don't have to IVTC or Deinterlace or anything at all. But as N_F said, to be on the safe side, FieldDeinterlace(Full=False) will protect you in case there is any interlacing. Maybe you just have a 29.97fps fully progressive video (no interlacing at all). It's rare, but can happen. I've never seen one myself, so I don't know if DVD2AVI shows that as NTSC-Interlaced or not.

As for doing a 10 minute section to check out the results, just add Trim(0,18000) to the .avs down at the bottom. That'll give you the first 10 minutes of it. You could probably do a lot less to get an idea of how it'll turn out. Trim(0,3000) will give you the first 100 seconds. Trim(10000,13000) will give you 100 seconds beginning about 5 and a half minutes into it.

[lw3der]

It looks great :)

I was left with two over 1 gb avi files, one with sound and one without sound ... I do not know why this happened, seems like a waist of space

Also, I selected 2 cds in GNott, why didnt the finished avi come out as two under 700 mb avis rather than one over gb one

If you guys want to see the logs of anything let me know

One thing that is noticeable is the d2v is just a sucession of 2's

[jggimi]

Gknot does not split automatically. You can follow Doom9's guide, which shows the (fairly simple) splitting process using Nandub. You can also split with VdubMod, AviMux, or AviSplitCalc. The latter is a front-end to Nandub.

[N_F]

Gordian Knot 0.28 is supposed to be able to auto-split, though I haven't tried it myself.

You mean that if you open the d2v-file in notepad it shows a lot of 2's? That seems very strange as that implies PAL if I remember correctly.

The reason you got 2 avi files (one with and one without sound) is that Gordian Knot have to join the video and audio afterwards, it's the only way to do things using the tools that are used.

[manono]

Hi-

One thing that is noticeable is the d2v is just a sucession of 2's

That just tells you how it was encoded (interlaced). It doesn't tell you how it was created. That's why you have to look at the frames to learn what's really stored on the DVD. There's a pretty full (but somewhat difficult to understand) explanation of that in the "Technical Guide To DVD2AVI" portion of that tutorial.

Edit: Hi N_F. I got called away before finishing, and you beat me to it. :) Yes, I see all too many of those .d2vs filled with 2s. They're common for encoded-as-interlaced NTSC DVDs.

[len0x]

Originally posted by jggimi
Gknot does not split automatically.

Sorry, couldn't help myself: notice your title "mod of misinformation" :)
As true as never, lol :)

[lw3der]

Using ' FieldDeinterlace(full=false) ' results in much poorer quality that just using none

That said, can I edit the avs to get rid of the field deinterlace and load it into GNott or Nandub or whatever to start from there

[jggimi]

Originally posted by len0x
Sorry, couldn't help myself: notice your title "mod of misinformation" :)
As true as never, lol :) Close. Gknot 0.28 now can split automatically... So I'm still misinforming people regularly.Originally posted by lw3der
...can I edit the avs to get rid of the field deinterlace and load it into GNott or Nandub or whatever to start from there Yes, you can. Use the Encoder tab, then push the "Add Job" button.

[lw3der]

Is all I have to do is put an ' # ' in front of ' FieldDeinterlace(full=false) ' to get rid of it or is there another way

Also, what do I do the the un marked ' LoadPlugin("C:\PROGRA~1\GORDIA~1\decomb.dll") '

[jggimi]

The "#" would make it a comment; comments are ignored by AviSynth. You can either do that, delete the line, or make it all spaces. Your choice.

The plugin (decomb.dll) contains a set of filters, including fielddeinterlace. You may safely leave it alone if you like, it won't harm anything. If you're overly concerned, comment it out, delete it, or make it blanks.

If you're really concerned, you can always have Gknot re-create your .avs script again.

[lw3der]

Thanks for the help

By the way, the boat under your nick, isnt that the boat that was created by that LW user

[jggimi]

No, that's a photograph of my boat. Well, the same make and model, taken from a bridge or a helicopter, that I got from the manufacturer's website a few years ago.

[lw3der]

For a second I thought it was this boat whic was done in LW including the water and wakes

http://www.evasion3d.com/gfx/hs/gallery/yacht2_sgn.jpg