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View Full Version : 29.97 NTSC. Still interlaced after FORCE FILM ?


nightrhyme
20th October 2005, 21:35
I have this DVD I'm not sure how to handle. Since I always rip Pal DVD's I have limited experience with NTSC.

Below is what DGIndex tells me. Should I use FORCE FILM and then DE-Interlace during encoding ?
Or something else ?

Tried Force Film and the DVD still shows sign of what I perceive as interlaced:
http://img444.imageshack.us/img444/1688/interlace4hw.jpg

Hope you guys can help me.

Thanx in advance


http://img288.imageshack.us/img288/8179/dgindex6qb.jpg

scharfis_brain
20th October 2005, 21:40
force film must not be used with interlaced encoded DVDs!

nightrhyme
20th October 2005, 21:48
Thanx for reply :)

Ok so no FORCE FILM. I leave the framerate at 29.97 and DE-Interlace during encoding ?

Is this DVD common NTSC material ?

jggimi
20th October 2005, 22:06
Just because DGIndex reports Interlaced doesn't mean that it *is*. DGIndex only reports on MPEG-2 flag fields. You must analyze the content frame-by-frame in order to determine if the content was Telecined, instead.

Please see www.doom9.org/ivtc-tut.htm for assistance. It's a little out of date, but I think you will find it helpful.

nightrhyme
20th October 2005, 22:49
Tried using the suggested avs:


# PLUGINS
LoadPlugin("C:\Program Files\GordianKnot\DGMPGDec\DGDecode.dll")
LoadPlugin("C:\Program Files\GordianKnot\AviSynthPlugins\decomb.dll")

# SOURCE
mpeg2source("D:\Failan\test2\VTS_01_1.d2v")

Telecide(post=false)

To analyze the material. But I'm getting this error. What am I doing wrong ?

http://img484.imageshack.us/img484/1301/avserror4er.jpg


I made a small(17mb) Vob sample if anyone would be so kind to check it out for me. Download: Failan.Sample.vob (http://rapidshare.de/files/6541085/Failan.Sample.vob.html) (Rapidshare. Click an the free button, wait for countdown and download)

jggimi
20th October 2005, 23:00
The tutorial is out of date. See your decomb.html documentation for Telecide's current syntax.

I'll download your vob fragment and take a look.

nightrhyme
20th October 2005, 23:23
Thanx so much #jggimi that's very kind of you.
Looking forward to hear your verdict :-)

Found another way to analyze (just skipping through frames in the scene with the jumping boy).
I see no duplicate frames and the order seems to be 2 interlaced frames and then 3 non-interlaced etc.
So I guess it can be IVTC'ed. But what filter and what arguments to use ?

jggimi
20th October 2005, 23:47
You could follow the guidelines in that tutorial (section 6, if I recall); or, if you were to use Gordian Knot, you could use its defaults.

Just for fun, I ran your fragment through AutoGK. After it analyzed your fragment, AutoGK used the following filters and settings to Inverse Telecine:Telecide(movie,order=1,guide=1,post=2).Decimate(mode=0)

Here's what it said about your content:[snip]...Processing file: C:\z\Failan.Sample.vob
[10/20/05 10:42:00 PM] Source resolution: 720x480
[10/20/05 10:42:00 PM] Found NTSC source.
[10/20/05 10:42:00 PM] Source aspect ratio: 16:9
[10/20/05 10:42:00 PM] Color correction enabled.
[10/20/05 10:42:00 PM] Analyzing source.
[10/20/05 10:42:12 PM] Source has percentage of interlacing in motion areas: 41.41
[10/20/05 10:42:12 PM] Source has percentage of telecined patterns: 97.22
[10/20/05 10:42:12 PM] Source has percentage of progressive patterns: 2.78
[10/20/05 10:42:12 PM] Source has percentage of interlaced patterns: 0.00
[10/20/05 10:42:12 PM] Source is considered to be FILM....[snip]

nightrhyme
21st October 2005, 00:23
Thanx so much for your help. I'll have to read up on the different arguments used in Telecide.

I guess I will use AutoGK to help me analyze unfamiliar material another time.

Thanx for helping out

manono
21st October 2005, 05:12
If you have the latest Decomb:

Telecide(Guide=1).Decimate()

I think. If it's a slightly older version, then you need Order=1 also.

Can't figure out how to DL the Vob. Don't bother explaining.

Guest
21st October 2005, 14:16
I recommend always including the AssumeTFF() or AssumeBFF() call to set the field order with the latest Decomb. Please refer to the Tutorial for details.

In this case:

MPEG2Source("E:\tmp\Fallan.d2v")
AssumeTFF()
Telecide(guide=1)
Decimate()

nightrhyme
23rd October 2005, 04:02
I used Decomb 521: Telecide(order=1,guide=1).Decimate()
Since Telecide(post=2) and Decimate(mode=0) are Defaults.

I did check the field order which is TFF.
So I guess AssumeTFF() is unnecessary ?
Thanx for all your help guys ;)

manono
23rd October 2005, 05:44
Hi-

So I guess AssumeTFF() is unnecessary ?

That's correct. The Order=1/0 requirement has been dropped from the newest Decomb.

Good movie, Failan.

Boulder
24th October 2005, 12:27
Avisynth automatically assumes BFF (why?) so you must state AssumeTFF() before Telecide if you use the latest Decomb.