what could be QTGMC settings for this DV(dvsd)?

[taigi]

Looking for appropriate QTGMC settings for this DV(dvsd) (Panasonic NV-GS80 camera).
Goal is to deinterlace escaping flicker and shimmer, keeping details, but not oversmoothing.
(This is one of two materials that I'm dealing with now.)
Thanks.

MediaInfo about this file:

General
Format : AVI
Format/Info : Audio Video Interleave
Commercial name : DV
Format profile : OpenDML
File size : 9.48 GiB
Duration : 44 min 37 s
Overall bit rate mode : Constant
Overall bit rate : 30.4 Mb/s
TAPE : (Unknown)
TCOD : 28800000
TCDO : 26801600000
VMAJ : 4
VMIN : 0
STAT : 66932 0 3.433375 1
DTIM : 0 0

Video
ID : 0
Format : DV
Codec ID : dvsd
Codec ID/Hint : Sony
Duration : 44 min 37 s
Bit rate mode : Constant
Bit rate : 24.4 Mb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Bottom Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 2.357
Time code of first frame : 00:00:02:22
Time code source : Subcode time code
Stream size : 8.98 GiB (95%)

[Selur]

Looking for appropriate QTGMC settings for this DV(dvsd) (Panasonic NV-GS80 camera).

without a sample: use preset="Slower"

[taigi]

Attaching sample.

[Selur]

No clue where those vertical lines come from, but after deinterlacing, you probably want to do something like:

TurnLeft()
SOME-AA-FILTER()
TurnRight()

So all in all I would
1. Deinterlace with QTGMC 'slower'
2. AA as described above
3. do some denoising
here's a picture after QTGMC + AA:

so one would probably add some denoising, contrast sharpening and color adjustments depending on personal preferences.

Cu Selur

[taigi]

Thanks.
Using dehalo and Santiag for AAing vertical lines (thanks for one user of this forum) already.
Can I tune QTGMC in any way?
Not for vertical lines, but maybe it ads some extensive smoothing?
Or maybe that doesn't matter, since video after AA is already hyper smooth.

[Selur]

I don't think that anything you can do with QTGMC will really survive the 'flipped' AA which is needed to get rid of those vertical lines,...

[taigi]

Trying to save on pennies here since they are still money?

[jagabo]

Looking for appropriate QTGMC settings for this DV(dvsd) (Panasonic NV-GS80 camera).
Goal is to deinterlace escaping flicker and shimmer, keeping details, but not oversmoothing.

Start with EZKeepGrain=1.0.

[jagabo]

Oops, wrong thread.

[taigi]

What about SourceMatch=3, Lossless=2?

[Sharc]

A horizontal downscale/upscale would suppress the vertical line artefacts as well, something like

bilinearresize(620,576).spline36resize(720,576)

[taigi]

Why bilinear for downscale? What about spline for downscale too? And what about spline64?

[Sharc]

Minimizing new artefacts.
But why don't you just try?

[jagabo]

Fix lines, keep grain/details:

LWlibavVideoSource("deinterDV.mp4") 

SeparateFields()
san = Santiag(strh=0, strv=1)
emask = mt_lutxy(san, last, expr="x y - Abs", chroma="-128").mt_binarize(4).mt_expand(chroma="-128").Blur(1.4)
Overlay(san, mask=emask)
Weave()

QTGMC(Sharpness=0.5, EZKeepGrain=1.0)

[taigi]

@jagabo, so this would be better then bilinearresize(620,576).spline36resize(720,576)?

[jagabo]

Why don't you compare for yourself?

You can also combine the two:

LWlibavVideoSource("deinterDV.mp4") 

SeparateFields()
src = last
san = Santiag(strh=0, strv=1)
emask = mt_lutxy(san, src, expr="x y - Abs", chroma="-128").mt_binarize(4).mt_expand(chroma="-128").Blur(1.4)
BilinearResize(620,height).Spline36Resize(720,height)
Overlay(src, BilinearResize(620,height).Spline36Resize(720,height), mask=emask)
Weave()

QTGMC(Sharpness=0.5, EZKeepGrain=1.0)

[taigi]

@jagabo, what about this one then:

LWlibavVideoSource("deinterDV.mp4")
QTGMC()
dehalo_alpha(rx=2.5, ry=2.5, brightstr=1.2, lowsens=0, highsens=50)
santiag(strv=3, type="nnedi3", nns=4, threads=0, nsize=4, halfres=false, scaler_post="Spline64Resize")

[Selur]

if the output is fine: good
simply looking at the output of the script might help,....

What about SourceMatch=3, Lossless=2?

like I wrote I think it's a waste of time,...

[taigi]

I don't think that anything you can do with QTGMC will really survive the <...> AA

Something apparently surviving as per my experiment.

[Selur]

Something apparently surviving as per my experiment.

Happy that you did experiment.