Vegas Movie Studio and interlaced content

[_Al_]

so it could be compared shifted, ok

import vapoursynth as vs
from vapoursynth import core
input=r'F:/Output.avi' #magicyuv (here it is RGB)
clip = core.ffms2.Source(input)
clip = core.std.SetFrameProp(clip, prop="_FieldBased", intval=2)  # 2 is TFF
clip = core.resize.Bicubic(clip, matrix_s = '170m', format = vs.YUV420P8).text.Text("Magic Avi")[129:]

d2v_file=r'F:/Source .MPG'
clip2 = core.d2v.Source(d2v_file).text.Text("MPG")

clip_out = core.std.Interleave([clip,clip2])
clip_out.set_output()

that magic RGB has different levels , did you try to check full range to that RGB?

[smartel]

magic was check interlace and check full range with rec601

and used levels to put them in legal range within vegas

[jagabo]

Vegas crushed both blacks and whites.

[smartel]

avisynth's histogram showed them both borderline..
i'll give them more headroom to breath , the whites are already blown in the source

[_Al_]

For example 255 values were brought down to legal value 235
and blacks also the other way , but it is not needed

you do not need to fix blacks
what effect did you use?
use basic brightness, contrast and center to tune it up , that should be in your version of Vegas - > to bring whites down, not blacks, or blacks just a tiny bit towards dark
this is your MPG and that Magic comparison, as you can see you do not need to crash blacks further together with whites

[johnmeyer]

BTW, for the near-blown out highlights, here's an old Vegas trick:

1. Add the Invert plugin to the event.
2. Add the Levels plugin to the event.
3. Add the Invert plugin (again) to the event.
4. Set both Invert plugins to invert 100%.
5. Use the Gamma slider on the levels plugin to adjust the levels. It will work backwards.

What has this achieved? The gamma function works more on the darker parts of the image. By inverting, it works more on the lighter sections.

[jagabo]

BTW, for the near-blown out highlights, here's an old Vegas trick:

1. Add the Invert plugin to the event.
2. Add the Levels plugin to the event.
3. Add the Invert plugin (again) to the event.
4. Set both Invert plugins to invert 100%.
5. Use the Gamma slider on the levels plugin to adjust the levels. It will work backwards.

What has this achieved? The gamma function works more on the darker parts of the image. By inverting, it works more on the lighter sections.

I do that in AviSynth with:

Invert().ColorYUV(gamma_y=x).Invert().

[_Al_]

nice tricks

in that Vegas using basic logic, just small steps, basics how to fix it:

[smartel]

One thing i may try is

Invert()
#ColorYUV(analyze=true)
SmoothLevels(16,1,255,16,235, HQ=true)
Invert()
Histogram("Levels")

i'm not too shure if their is a dithering option in smoothlevels or if it's even needed

i know blowed highlights are lost.. but if i can recover even a little bit of anything that's left ...

or at least make it more watchable ..

[jagabo]

One thing i may try is

Invert()
#ColorYUV(analyze=true)
SmoothLevels(16,1,255,16,235, HQ=true)
Invert()
Histogram("Levels")

i'm not too shure if their is a dithering option in smoothlevels or if it's even needed

i know blowed highlights are lost.. but if i can recover even a little bit of anything that's left ...

or at least make it more watchable ..

That will raise the black level, not lower the white level.

[smartel]

SmoothLevels(0,1,235,16,235, HQ=true) ..the other way around ..you're right

[jagabo]

Why invert, adjust, then invert again? SmoothLevels is linear (when not using the gamma option) so skip the inversions and just use SmoothLevels to pull the whites down.

[smartel]

johnmeyer said "The gamma function works more on the darker parts of the image. By inverting, it works more on the lighter sections. " ..in vegas.. maybe not in avisynth..

[jagabo]

You're not using the gamma option in your SmoothLevels call (it's set to 1, no change). So the function is linear.

######################################################

function GreyRamp()
{
   black = BlankClip(color=$000000, length=256, width=1, height=256, pixel_type="RGB32")
   white = BlankClip(color=$010101, length=256, width=1, height=256, pixel_type="RGB32")
   StackHorizontal(black,white)
   StackHorizontal(last, last.RGBAdjust(rb=2, gb=2, bb=2))
   StackHorizontal(last, last.RGBAdjust(rb=4, gb=4, bb=4))
   StackHorizontal(last, last.RGBAdjust(rb=8, gb=8, bb=8))
   StackHorizontal(last, last.RGBAdjust(rb=16, gb=16, bb=16))
   StackHorizontal(last, last.RGBAdjust(rb=32, gb=32, bb=32))
   StackHorizontal(last, last.RGBAdjust(rb=64, gb=64, bb=64))
   StackHorizontal(last, last.RGBAdjust(rb=128, gb=128, bb=128))
}

######################################################

GreyRamp().ConvertToYV12(matrix="PC.601")

dir = SmoothLevels(16,1,255,16,235, HQ=true).TurnRight().Histogram().TurnLeft().Subtitle("direct")
inv = Invert().SmoothLevels(0,1,235,20,235, HQ=true).Invert().TurnRight().Histogram().TurnLeft().Subtitle("invert")

StackHorizontal(dir, inv)

[Attachment 49020 - Click to enlarge]

Also, note that the difference between 255 and 235 is 20, not 16.

[smartel]

without inverting was around 0.83 ..didn't try it yet ..i'll have more time this weekend..
..i read that some people used hdragc() for this but i didn't have much success

[jagabo]

Effect of gamma, SmoothLevels(0 ,2.0, 255, 0, 255, HQ=true), and invert() before and after.


[Attachment 49024 - Click to enlarge]