It seems that MaskSubMod() does not support VSFilterMod?

[mojie126]

It seems that MaskSubMod() does not support VSFilterMod
LoadPlugin("D:/afd/DGCube.dll") LoadPlugin("D:/afd/VSFilterMod.dll") MaskSubMod("D:/afd/a-mmrq14.ass", 1920, 1080, 23.97599983215332, 51424) ConvertBits(16) ConvertToPlanarRGBA() DGCube("D:/afd/BT709_to_PQ.cube")

[FranceBB]

The issue here is that Cube() along with DGCube() only accept RGB planar 16bit, without the alpha channel.
Luckily there's a "trick" or rather a "workaround" shall I say.
Essentially the alpha channel is literally just one additional channel on top of the normal RGB, which means that it can absolutely be treated separately as if it was just a normal, fake, RGB, and then added back.
I actually had to do something similar when I had to convert the logos coming from the graphics department from BT709 SDR to BT2020 HLG (you're going to PQ but it's the same thing for all intents and purposes).
Anyway, long story short, this is what I've done when I had to encode the RGBA stills:

FFImageSource("\\mibctvan000\Ingest\MEDIA\temp\LUT conversion for stills\MicrosoftTeams-image (1).png")

my_alpha=ShowAlpha(pixel_type="RGB24")


RemoveAlphaPlane()

ConvertBits(16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)

Cube("\\mibctvan000\Ingest\MEDIA\temp\LUT conversion for stills\3a_BT709_HLG_Type1_Display_DirectMapping_nocomp-v1_5 1.cube", interp=1, fullrange=1)

my_HLG=last

ConvertBits(my_alpha, 16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)

Cube("\\mibctvan000\Ingest\MEDIA\temp\LUT conversion for stills\3a_BT709_HLG_Type1_Display_DirectMapping_nocomp-v1_5 1.cube", interp=1, fullrange=1)

ConverttoY(matrix="PC.2020")


my_alpha_HLG=last


AddAlphaPlane(my_HLG, my_alpha_HLG)

So, by re-arranging what I've done to your use case, your script would become:

MaskSubMod("D:/afd/a-mmrq14.ass", 1920, 1080, 23.97599983215332, 51424)

#Save alpha channel
my_alpha=ShowAlpha(pixel_type="RGB24")

#From BT709 to PQ without alpha
RemoveAlphaPlane()
ConvertBits(16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
DGCube("D:/afd/BT709_to_PQ.cube")
my_PQ=last

#From BT709 to PQ only alpha
ConvertBits(my_alpha, 16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
DGCube("D:/afd/BT709_to_PQ.cube")
ConverttoY(matrix="PC.2020")
my_alpha_PQ=last

#Add PQ converted alpha back to PQ converted RGB
AddAlphaPlane(my_PQ, my_alpha_PQ)

Now, I commented the code to make it easier.
It's still a bit convoluted, though, so I'll leave the issue open until I'll add it to LinearTransformation() so that I can handle it automatically and properly support RGBA 'cause I feel like this is something the function should do automatically.

I think I deserve a cappucino now. :P

[mojie126]

This is my final script, which doesn't seem to work well. Even if I replace DGCube with Cube and import vscube.dll, it still doesn't work

LoadPlugin("D:/afd/DGCube.dll")
LoadPlugin("D:/afd/VSFilterMod.dll")
MaskSubMod("D:/afd/a-mmrq14.ass", 1920, 1080, 23.97599983215332, 51424)
my_alpha=ShowAlpha(pixel_type="RGB24")
RemoveAlphaPlane()
ConvertBits(16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
DGCube("D:/afd/BT709_to_PQ.cube")
my_PQ=last
ConvertBits(my_alpha, 16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
DGCube("D:/afd/BT709_to_PQ.cube")
ConverttoY(matrix="PC.2020")
my_alpha_PQ=last
AddAlphaPlane(my_PQ, my_alpha_PQ)

[FranceBB]

What's the actual error outputted?

[mojie126]

Prompt 'No events detected. Cowardly reusing to write XML file.'
I am using avs2bdnXML to convert ass subtitles to BDNXML

[mojie126]

win11 x64
VSFilterMod x86
AviSynth+ 3.7.3
But I don't know if DGCube.dll and vscube.dll are x86 or x64

[FranceBB]

Ok, I downloaded VSFilterMod and actually tested on a test.ass with ColorBars().
Apparently MaskSubMod() wasn't exactly doing what I expected it to be doing, so I had to change the script a bit.
Anyway, this works:

ColorBars(848, 480, pixel_type="RGB32")
ChangeFPS(23.976)


my_alpha=MaskSubMod("A:\Ingest\MEDIA\temp\Test.ass", 848, 480, 23.97599983215332, 51424).FlipVertical()

#From BT709 to PQ without alpha
RemoveAlphaPlane()
ConvertBits(16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
Cube("C:\Program Files (x86)\AviSynth+\LUTs\BT709_to_PQ.cube")
my_PQ=last

#From BT709 to PQ only alpha
ConvertBits(my_alpha, 16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
Cube("C:\Program Files (x86)\AviSynth+\LUTs\BT709_to_PQ.cube")
ConverttoY(matrix="PC.2020")
my_alpha_PQ=last

#Add PQ converted alpha back to PQ converted RGB
AddAlphaPlane(my_PQ, my_alpha_PQ)

Of course ColorBars() are just an example as I didn't want to index another content.

This is the converted colorbars in RGBA 16bit:

and this is the relative alpha channel (also in PQ):

from the script Test.ass which is here:

[FranceBB]

Your request has been satisfied and I've added a preliminary support to RGB32 in version 2.6 https://github.com/FranceBB/LinearTransformation/releases/tag/2.6

As an example, let's take a look at the following fake RGB32 input:

ColorBars(848, 480, pixel_type="RGB32")
pippo=last

pluto=pippo.ConverttoY()

AddAlphaPlane(pippo, pluto)

This creates an RGB32 stream in which the first 24bit are RGB (i.e 8+8+8=24):

and the last 8 are the alpha channel (+8 = 32):

This is in BT709 SDR.
When we apply:

LinearTransformation(Input="Linear_BT709", Output="BT2100_PQ", Interpolation="Tetrahedral")

what's gonna happen is that the stream will be divided in two parts: the normal part and the alpha channel and both will be subject to the very same transformation (in this case from BT709 to BT2020 PQ) before being added back to create a proper RGB32 output:

as per your request.
I therefore consider this issue closed (it should have really been a feature request, though, but it's fine xD)

[mojie126]

That's great Thank you
Is ColorBars mandatory?
Is it okay to just use these codes?

my_alpha=MaskSubMod("A:\Ingest\MEDIA\temp\Test.ass", 848, 480, 23.97599983215332, 51424).FlipVertical()

#From BT709 to PQ without alpha
RemoveAlphaPlane()
ConvertBits(16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
Cube("C:\Program Files (x86)\AviSynth+\LUTs\BT709_to_PQ.cube")
my_PQ=last

#From BT709 to PQ only alpha
ConvertBits(my_alpha, 16)
ConvertToPlanarRGB(matrix="PC.709", interlaced=false)
Cube("C:\Program Files (x86)\AviSynth+\LUTs\BT709_to_PQ.cube")
ConverttoY(matrix="PC.2020")
my_alpha_PQ=last

#Add PQ converted alpha back to PQ converted RGB
AddAlphaPlane(my_PQ, my_alpha_PQ)

[mojie126]

I now suspect that it may be an issue with avs2bdnxml. I have seen that it is implemented using vfw, and may it be that vfw does not support it?
https://github.com/koroban/avs2bdnxml

[mojie126]

LoadPlugin("D:/afd/VSFilterMod.dll")
LoadPlugin("D:/afd/vscube.dll")
clp=MaskSubMod("D:/afd/a-mmrq14.ass", 1920, 1080, 23.97599983215332, 51424)
my_alpha = clp.ShowAlpha(pixel_type="RGB24")
clp = clp.RemoveAlphaPlane()
clp = clp.ConvertBits(bits=16).ConvertToPlanarRGB()

ConvertBits(my_alpha, 16)
ConvertToPlanarRGB()
Cube("D:/afd/BT709_to_PQ.cube")
ConverttoY()
my_alpha=last
Cube(clp, "D:/afd/BT709_to_PQ.cube")
my_video=last
AddAlphaPlane(my_video, my_alpha)

Convert the avs script using avs2bdnxml, but still prompt "No events detected. Cowardly refusing to write XML file."

[mojie126]

Tested to be an issue with vscube.dll, which seems to not support x86