Old DVD - Looking to change 29.97fps to 24fps and cleanup/sharpen footage

[Akuma786]

Hi, I would like to change the fps to 24 and cleanup the video as much as possible without removing to much details and try to sharpen if possible.

Here is sample of DVD:

https://www.swisstransfer.com/d/f351362b-c1e5-4837-8c12-b9c802350333

Here is my script so far:

a = LWlibavAudioSource("G:\future projects\buddhist fist\VERSION 2\Demux WS Files\VTS_01_1 T81 1_0ch 112Kbps DELAY 0ms.ac3") # get audio (decompressed to PCM)
v = Mpeg2Source("G:\future projects\buddhist fist\VERSION 2\Demux WS Files\VTS_01_1.d2v", Info=3) # get video
AudioDub(v,a) # join audio and video together
TFM()
TDecimate(Cycle=5, CycleR=1)   #returns 23.976fps progressive frames

ColorMatrix(mode="rec.601->rec.709")
Crop(10, 68, -10, -68, align=false)
SMDegrain(thsad=172, tr=3, PreFilter=4)

AssumeFPS(24000, 1000, sync_audio=true) 
SSRC(48000) # convert audio to 48000 Hz samples

Any advice and tips would be appreciated.

[Alwyn]

The decimation looks good; with a 12344 frame pattern video there's no need for the cycle values; the standard () is 5/1.

The colormatrix should stay at 601 for video less than 720 pixels high. For 720 and above, 709.

The frame ratio looks OK.

LSFMod is used by some for sharpening.

[Sharc]

Some doubts here about the true aspect ratio of the movie. DVD is DAR 16:9 or 4:3 (and theoretically SAR 1:1 square pixels). Neither looks quite right for the .VOB source. Leaves some room for speculation IMO ....
Is the true movie aspect ratio 16:9, 1.85:1 or 2.40:1 or something exotic, like 2.0:1 (18:9 Univisium)? Opinions?

[Alwyn]

Agree, the DVD, if displayed at 16:9 (as per Mediainfo), is definitely borked.

I'm leaning towards 2:1. All the heads are different shapes, which makes it tricky, but the red diamond on the wall (assuming it's square) looks best at 2:1.

1:85:1

[Attachment 90264 - Click to enlarge]

2:1

[Attachment 90265 - Click to enlarge]

1:85:1

[Attachment 90266 - Click to enlarge]

2:1

[Attachment 90268 - Click to enlarge]

[Sharc]

I agree with 2:1 for the movie. So the OP's DVD (the .VOB) is square pixels it seems. I have never seen this. Every day something new .
I just wonder which DVD player would play it correctly.

[Akuma786]

Thank you, So to achieve 2.1 AR in avisynth do I need to splines resize ?

Also any suggestion for filters to improve picture quality.

[Selur]

Side note:
TFM().TDecimate() is unnecessary,..
Source is soft telecine, so DGSource or MPEG2Source with fieldop=1 should be used.

[johnmeyer]

Side note:
TFM().TDecimate() is unnecessary,..
Source is soft telecine, so DGSource or MPEG2Source with fieldop=1 should be used.

Yeah, most film content is encoded on NTSC DVD as 24 (23.976) fps and when you rip it, you should end up with video that does NOT need TFM/Tdecimate().

[Sharc]

Thank you, So to achieve 2.1 AR in avisynth do I need to splines resize ?

No. Just crop as you did. The Pixel Aspect Ratio of this .VOB seems to be 1:1 (square pixels), surprisingly.

[Sharc]

Side note:
TFM().TDecimate() is unnecessary,..
Source is soft telecine, so DGSource or MPEG2Source with fieldop=1 should be used.

Yeah, most film content is encoded on NTSC DVD as 24 (23.976) fps and when you rip it, you should end up with video that does NOT need TFM/Tdecimate().

Sometimes one finds mixed soft-/hard telecined content which is safely handled by TFM()/TDecimate().

[Akuma786]

Thank you guys. Much appreciated.

[manono]

Side note:
TFM().TDecimate() is unnecessary,..
Source is soft telecine, so DGSource or MPEG2Source with fieldop=1 should be used.

Yeah, most film content is encoded on NTSC DVD as 24 (23.976) fps and when you rip it, you should end up with video that does NOT need TFM/Tdecimate().

Sometimes one finds mixed soft-/hard telecined content which is safely handled by TFM()/TDecimate().

Yes, the sample might be 100% film but there's no way to be sure the entire film is unless it says 100% film at the bottom of a D2V file. Otherwise there's at least a fair chance you'll get some inconvenient interlacing somewhere, or as Selur mentions, there are hard telecined sections. TFM has a setting to treat the video as if it's been Forced Filmed and only IVTC the video parts. If you first create a D2V file using "honor pulldown flags".

[Akuma786]

D2V file says: FINISHED 99.25% FILM

[manono]

Ordinarily the hard telecine (or even real interlace) in situations like that are in some stray black frames here and there. In those cases using Forced Film doesn't hurt anything. And it is faster, no question. If you want to be sure to get it right, then set the Field Operation for Honor Pulldown Flags and make the script like this:
TFM(d2v="Movie.d2v")
TDecimate()
About the D2V setting, the doc says this:
"If the order parameter is set to "-1" then TFM
will detect the field order from the d2v file and set the order parameter to match. Depending
on the value of the "flags" parameter, TFM will also use the d2v info for field matching
and will pass info from the d2v on to tdecimate to help aid duplicate detection and hybrid
detection."
This pretty much means it will use Forced Film except where it drops to video, when it will do an IVTC. Up to you. I have seen a number of Criterion DVDs where they drop to video at some scene changes They used to be kind of famous for it. You'd all of a sudden see an interlaced frame or several. Very annoying.