avisynth: when I resize where is the interlaced flag?

[marcorocchini]

Hi please can you help a cat?

I wonder: meanwhile virtualdub have a checkbox that you specify your is a interlaced source



I cannot find this "option" in avisynth

for example I do:

Yadif(1,1)
LanczosResize(720,576)
AssumeTFF().SeparateFields().SelectEvery(4, 0, 3).Weave()

but in wich way I can tell to avisynth that my source in interlaced so that it have to considering it when resize? thanks

[LMotlow]

I wonder: meanwhile virtualdub have a checkbox that you specify your is a interlaced source


[Attachment 27629 - Click to enlarge]

I cannot find this "option" in avisynth

for example I do:

Yadif(1,1)
LanczosResize(720,576)
AssumeTFF().SeparateFields().SelectEvery(4, 0, 3).Weave()

but in wich way I can tell to avisynth that my source in interlaced so that it have to considering it when resize? thanks

You don't. Avisynth doesn't recognize interlace flags, and neither does VirtualDub. You have to specify with both.

Why are you using lanczos? It sucks.
http://hermidownloads.craqstar.de/videoresizefiltercomparasion/
http://web.archive.org/web/20060827184031/http://www.path.unimelb.edu.au/~dersch/inter...erpolator.html

[marcorocchini]

I don't know why I'm use Lanczos: I notice that in virtualdub, using the lanczos and the checked "interlaced" box--> quality of resize is "good", but if I uncheck the "interlaced" option I see some artifacts in details of image

Now I'm wondering if also avisynth have a similar option ... e.g. lanczosresize(720,576, interlaced=true) or something of that.

However in avisynth I use the IResize function and is similar to the use of Lanczos+Interlaced (as shown above) of virtualdub.

Is it a better way? thanks

[_Al_]

That virtualDub resize filter is Lee's resize filter, it considers interlace out as well. But internally I am not sure how it is being done. You should have video progressive to resize and re-interlace it again. Donald Graft wrote "smart resize" filter based on that Lee's resize, so maybe it is almost the same, it looks like this, I used to use this for a while:

Import("C:\.................\vdub_filters.avsi")                                            
AviSource("C:\..............\60i.avi", audio = false)                                               
LoadVirtualdubPlugin("C:\.....\Resize.vdf", "_VD_SmartResize")                  
VD_SmartResize(720, 480 , true, false, 720, 480 , "p_bicubic")

so you can "read" that avsi and study how it is being done, what is happening "behind scenes" or to use that resize in Avisynth as well,

but I found iResize better than this, not knowing of any shortcut to not bother to double frame rate de-interlace it first ...

[LMotlow]

Now I'm wondering if also avisynth have a similar option ... e.g. lanczosresize(720,576, interlaced=true) or something of that.

The interlace parameter isn't available.

However in avisynth I use the IResize function and is similar to the use of Lanczos+Interlaced (as shown above) of virtualdub.

No it isn't. The iResize script uses Spline36ReSize, not Lanczos.

Is it a better way? thanks

Check the links I posted and judge for yourself.

[marcorocchini]

mm,

can I use in avisynth the VDMod_resize.vdf resize filter of virtualdub?

[jagabo]

Now I'm wondering if also avisynth have a similar option ... e.g. lanczosresize(720,576, interlaced=true) or something of that.

VirtualDub does the equivalent of this:

SeprateFields().LanczosResize(desired_width, half_desired_height).Weave()

That looks ok if your source isn't very sharp. But if you have a sharp horizontal edges you get bad ringing artifacts and doubled edges. An example:

https://forum.videohelp.com/threads/334812-AVS-File-Steps?p=2077875&viewfull=1#post2077875

You can reduce the ringing artifacts by using a less sharp resizer. But the doubled edges can't be completely eliminated. It's better to do something like QTGMC().Resize().Reinterlace().

[marcorocchini]

ok, but in general: can I use the virtualdub resize plugin in avisynth? in this case I'm curios, is possible, to use the virtualdubMOD resize plugin into avisynth

[jagabo]

can I use the virtualdub resize plugin in avisynth?

No. VirtualDub's internal filters cannot be used in AviSynth.

[marcorocchini]

but I have a "external" .vdf filter, in this case can I use it in avisynth?

[marcorocchini]

SeprateFields().LanczosResize(desired_width, half_desired_height).Weave()

so the script become this? (C0035.mxf is a SD clip that I should convert in HD 1920x1080)

LoadCPlugin("C:\Program Files\AviSynth\plugins\yadif.dll")
FFVideoSource("C:\Users\Administrator\Desktop\upsc ale\C0035.MXF")
ConvertToYUY2(interlaced=true)
crop(0,32,0,0)
Yadif(1,1)
SeprateFields().LanczosResize(1920, 540).Weave()
AssumeFPS(25)

but I get an error, how I have to modify it? consider source is interlaced, thanks

[_Al_]

there is "a" missing in SeparateFields()

[marcorocchini]

so how have to change this catscript?^^

[poisondeathray]

You don't use yadif before if you are using separatefields().LanczosResize(1920, 540).Weave()

That vdub interlaced resize method resizes fields, you don't bob deinterlace before. That's why it produces worse results - the even/odd vertical field offset isn't taken into account. Proper way is to smart bob deinterlace first

[marcorocchini]

bob deinterlace first? mmm

so how can I change it?

FFVideoSource("C0035.MXF")
ConvertToYUY2(interlaced=true)
crop(0,32,0,0)
bob(1,1)
SeprateFields().LanczosResize(1920, 540).Weave()
AssumeFPS(25)


and: the converttoyuy2(interlaced=true) is correct before of all? thanks

[poisondeathray]

No deinterlace, no bob, no yadif. If you are simulating using vdub method, erase that line

FFVideoSource("C0035.MXF")
AssumeFPS(25)
ConvertToYUY2(interlaced=true)
crop(0,32,0,0)
SeparateFields().LanczosResize(1920, 540).Weave()

[marcorocchini]

FFVideoSource("C:\Users\Administrator\Desktop\upscale\C0037.MXF")
ConvertToYUY2(interlaced=true)

ColorMatrix(mode="Rec.709->Rec.601")

SeparateFields().LanczosResize(720, 288).Weave()
AssumeFPS(25)

I have try with this similar, but there is a problem: image seems to vibrate slightly during playback

usually, for example, when I resize in avisynth in this mode:

LoadCPlugin("C:\Program Files\AviSynth\plugins\yadif.dll")
FFVideoSource("d:\xdcamF335\c0013.mxf")
#ColorMatrix(mode="Rec.709->Rec.601")


Yadif(1,1)
GaussResize(1920,1080)
AssumeTFF().SeparateFields().SelectEvery(4, 0, 3).Weave()

AssumeFPS(25)

ConvertToYUY2(interlaced=true)


maybe is missing something that do the correct interlacing?

[_Al_]

what is default in Avisynth ? bff or tff?? Better use assumetff() if you manipulate with interlaced footage, before that separatefields()

but anyway, I jumped to IResize for now, post #4, I used that resize.vdf in Avisynth (no bob deinterlace there) , and that VD filter does perhaps things even better than that simple Avisynth line

[poisondeathray]

I have try with this similar, but there is a problem: image seems to vibrate slightly during playback

That's why quality is lower. Don't simply resize fields - quality will be worse

[poisondeathray]

When you upscale, it's even more important to use a good deinterlacer, otherwise you upscale deinterlacing artifacts, jaggies . Going down choice of deinterlacer is less important because deinterlacing artifacts are scaled down, less visible. You also might want to consier nnedi3_rpow for upscaling

Also when going up, use colormatrix 601 to 709

[marcorocchini]

ok, I use only the IResize but is a little slow, hoewver can I enclose the function of iresize in a external file (a .avsi file?) and "load" as "plugin" as well as, for example, yadif.dll?

FFVideoSource("c:\gopro25FPS.mp4")
ColorMatrix(mode="Rec.709->Rec.601")
IResize(720,576)

function IResize(clip Clip, int NewWidth, int NewHeight) {
Clip
SeparateFields()
Shift=(GetParity() ? -0.25 : 0.25) * (Height()/Float(NewHeight/2)-1.0)
E  = SelectEven().Spline36resize(NewWidth, NewHeight/2, 0,    Shift)
O  = SelectOdd( ).Spline36resize(NewWidth, NewHeight/2, 0,   -Shift)
Ec = SelectEven( ).Spline36resize(NewWidth, NewHeight/2, 0,  2*Shift)
Oc = SelectOdd( ).Spline36resize(NewWidth, NewHeight/2, 0, -2*shift)
Interleave(E, O)
IsYV12() ? MergeChroma(Interleave(Ec, Oc)) : Last 
Weave()
} 
AssumeTFF()
SeparateFields()
Ev=SelectEven().sharpen(0.20)
Od=SelectOdd().sharpen(0.20)
Interleave(Ev,Od)
Weave()
AssumeFPS(25)

ConvertToYUY2(interlaced=true)

[jagabo]

ok, I use only the IResize but is a little slow, hoewver can I enclose the function of iresize in a external file (a .avsi file?) and "load" as "plugin"

You've been using AviSynth this long and you have to ask that? Why don't you just try it?

IResize is not much of an improvement over a simple SeparateFields().Resize().Weave(). Try it on the image in the link I posted.

[marcorocchini]

I like integrate the sharpen(0.20) into the IResize so that the IResize function becomes:

function IResize(clip Clip, int NewWidth, int NewHeight) {
Clip
SeparateFields()
Shift=(GetParity() ? -0.25 : 0.25) * (Height()/Float(NewHeight/2)-1.0)
E  = SelectEven().Spline36resize(NewWidth, NewHeight/2, 0,    Shift)
O  = SelectOdd( ).Spline36resize(NewWidth, NewHeight/2, 0,   -Shift)
Ec = SelectEven( ).Spline36resize(NewWidth, NewHeight/2, 0,  2*Shift)
Oc = SelectOdd( ).Spline36resize(NewWidth, NewHeight/2, 0, -2*shift)
Interleave(E, O)
IsYV12() ? MergeChroma(Interleave(Ec, Oc)) : Last 
Weave()
AssumeTFF()
SeparateFields()
Ev=SelectEven().sharpen(0.20)
Od=SelectOdd().sharpen(0.20)
Interleave(Ev,Od)
Weave()} 

but is this correct?

[marcorocchini]

import("C:\Program Files\AviSynth\plugins\IResize.avsi")
FFVideoSource("C:\Users\Administrator\Desktop\farfalle miao\C0037 fullhd .MXF")
ConvertToYUY2(interlaced=true)
src = last 
src = src.width==720&&src.height==608?src.crop(0,32,0,0):src 
src = src.width==1920 && src.height==1088 ? src.crop(0,0,1920,1080): src 
src = src.width>720 || src.height>608?src.ColorMatrix(mode="Rec.709->Rec.601"): src 
src = src.width!=720 || src.height!=576 ? src.IResize(720,576): src 
src.framerate<26 ? src:src.AssumeTFF().SeparateFields().SelectEvery(4,0,3).Weave() 
AssumeFPS(25)
ChangeFPS(25)

[pandy]

Marco - Your trolling is class for itself - i can't even imagine someone better... free beer from my side if we ever have opportunity to drink it!

[Alex_ander]

That function just compensates for vertical shift errors - compared to the simple separatefields.resize.weave method. The second problem remains: when you resize separated fields, vertically you can only move objects by 2-line steps of original image. This means that edges of resized objects never get into lines of the missing field. If original image is sharp enough, this can give noticeable distortion of horizontal edges to the objects in picture (be it still or with motion between fields). Therefore, the methods of 'smartbob.resize.reinterlace' type, while not as fast, are generally preferable (most smart bob functions use both fields at deinterlacing). Example:

......................
TDeint(mode=1)# not too slow smart bob; or yadif could be used here, not Bob()
Spline36Resize(1920,1080)
AssumeTFF().SeparateFields()
SelectEvery(4,0,3).Weave()# TFF

[marcorocchini]

Marco - Your trolling is class for itself - i can't even imagine someone better... free beer from my side if we ever have opportunity to drink it!

?

I've found another post of poison in wich he write that a function can me recalled with import(xyz.avsi) and.. magically work.

Are u a cat?

[jagabo]

*.AVSI files in AviSynth's plugins folder should be loaded automatically every time AviSynth is invoked. So you don't need to explicitly import them.

[pandy]

Marco - Your trolling is class for itself - i can't even imagine someone better... free beer from my side if we ever have opportunity to drink it!

?

I've found another post of poison in wich he write that a function can me recalled with import(xyz.avsi) and.. magically work.

Are u a cat?

Once again - i believe that smart trolling is a kind of art and You are real ARTIST - first class and i'm not trying to insult You. Well Done Sir!

Nope i'm not a cat - i like cats from a safe distance as some people says: "You can be a dog owner by in case of cats You are always own by a cat".