Frederik-andre Savard
Forum Replies Created
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i’ll try to make a similar projet for toninght. Im not allowed to post anything about it. So today or tommorow you sould have it !
Thanks in advance
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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I already try on 3 different computer. After effect just seem to render the background on the part that my caracter touch it. If i put a red solid behin, tha black bg will render around it, but not in the rest of the comp.
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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It is black yes, that why i think it is sooo weird !
I got my black solid as my gb, and my compositing is also black
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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chek both and still he only render some block of black (just the part of the screen that my caracter touch), My environnement is also set to black
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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okay i almos got a way, but i still need some help. I got a weird issue that come up,
I precomp my layer (without the glow), in that layer, i put a black solid at the end of it.
On that pre-comp, i put my glow as a layer style and apply the effect *set matte*.
I set my matte to my proper matte and then render my comp as a straith unmatted.
When i poen my frame in photoshop, my alpha cut at my caracter, and my glow is in my rgb pass. It’s quite great, but now, my black bg dosen’t follow everywhere. I only get black box around my caracter and the rest of the frame is white. Wich is a big issue cause the withe in additive mode screw everything up ! Do you have any cue on how to leave that bg entirely black ?
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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I see… ae should be rendering the alpha of the glow in the alpha of the composite.
Actualy i want the exact opposite.
What you see is an aexple of what i want in photoshop. In after effect, my glow is included in the alpha channel, but i actually only want my key in the alpha channel
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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https://i.imgur.com/elbRo.jpg
https://i.imgur.com/K1nFc.jpgOkay you can see better what i want here,
The glow is in the rbg channel, but the alpha actually stops at the glow. It quite simple to do in pohoshop. But in after effect, at the moment that my alpha channel stop, nothing appers. So my glow is there yes, but dosent render because of the alpha. In composite of autodesk, you simply have to say to the program render the rgb channel apart from the alpha, So the program dosen’t take care of the alpha while rendering it, but still store the alpha channel in the image sequence.
Does that make sens or im still too vague ?
It seem quite complicated to explain but the problem is actually very simple.Thank in advance for your answer !
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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https://i.imgur.com/elbRo.jpg
https://i.imgur.com/K1nFc.jpgOkay you can see better what i want here,
The glow is in the rbg channel, but the alpha actually stops at the glow. It quite simple to do in pohoshop. But in after effect, at the moment that my alpha channel stop, nothing appers. So my glow is there yes, but dosent render because of the alpha. In composite of autodesk, you simply have to say to the program render the rgb channel apart from the alpha, So the program dosen’t take care of the alpha while rendering it, but still store the alpha channel in the image sequence.
Does that make sens or im still too vague ?
It seem quite complicated to explain but the problem is actually very simple.Thank in advance for your answer !
Frédérik-André Savard
VFX Artist – https://www.fasavard.comWhen you are not practicing, remember, someone somewhere is practicing, and when you meet him he will win – Ed Macauley
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Unfortunatly no it dosent help,
when i render my keying with my glow, i do not have any backgroud. I do understand the principle of the premultiplied alpha.
I’m able to map my alpha channel with the good one. I just want after effect to leave rbg channel as it is.
Like the openEXR, you can store zdepth channel or matte id channel, and it dosen’t affect your rgb. i think to solve this problem we need to focus on the principle that works in photoshop.
You have your rbg channel, with a person that glow’s. but when you look in the alpha channel, you see that the alpha cut’s at the person, so it dosent include the glow. It is very possible to have this in a picture, like a targa 32 bits.
But now it’s to tell after effect the same thing. i know i could do a photoshop script, but once again in my production pipeline, the option is not a option.
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Don’t worry, no question is stupid.
i Cant use a separated matte in my engine cause of my memory. My project need top optimisation. The process should be simple, in photoshop you can draw a alpha channel, and still have your photo in the rbg channel. But in after effect, he remove everything that pass my alpha. Every compositing software is suppose to do that, it’s simple, you say to the program, that layer is now the alpha (wich im able to do in after effect with channel selector), but i also want him to keep my rgb channel untouche.