<p>I would put all three files on three layers in either Premiere or After Effects, and play with the different blend modes and opacity of each layer until the image looks right. Screen, Add, or Overlay modes will probably be worth trying.</p>
<p>Premiere:
<a href="https://helpx.adobe.com/premiere-pro/using/blending-modes.html" rel="nofollow noreferrer">https://helpx.adobe.com/premiere-pro/using/blending-modes.html</a></p>
<p>After Effects:
<a href="https://helpx.adobe.com/after-effects/using/blending-modes-layer-styles.html" rel="nofollow noreferrer">https://helpx.adobe.com/after-effects/using/blending-modes-layer-styles.html</a></p>

CC BY-SA 4.0
2021-07-21T01:59:47.797Z
If they are the Red Green and Blue channels then Add mode would be correct.
stib
CC BY-SA 4.0
2021-07-23T07:27:08.580Z
But OP is asking for false color.  Adding would give normal color.  If he means false color like the “Predator Vision” exposure tool in some cameras and broadcast monitors, he’d also need to posterize, then remap based on Y’, which I think can be done with the “ramp” effect in AE, if I remember correctly.  In DaVinci Resolve, there’s a false color effect that’s just drag and drop.
Jason Conrad
CC BY-SA 4.0
2021-07-23T07:27:49.140Z
Very good point - please add as an answer!
tomh
CC BY-SA 4.0
2021-07-17T06:41:02.283Z
2021-07-17T06:41:02.283Z
tomh
<p>Just to build on @tomh answer, to get false colour you will first need to get true colour by added the layers in after effects, use the &quot;Add&quot; blend mode as mentioned, which will get you true colour (rough enough without grading).</p>
<p>Not sure this is exact &quot;false color&quot; but it will work near enough for your purpose I think:</p>
<p>You will need to select all 3 layers and pre-compose them.</p>
<p><a href="https://i.sstatic.net/wEjWa.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/wEjWa.png" alt="enter image description here" /></a></p>
<p>Then go into Photoshop, create a blank, empty document of the same size as your footage.</p>
<p>At the bottom of the layers panel, create a new Gradient Map adjustment layer.</p>
<p><a href="https://i.sstatic.net/s4jiZ.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/s4jiZ.png" alt="enter image description here" /></a></p>
<p>Select a gradient map that fits your requirements, or create your own.  This is what will map light and dark values to colours.</p>
<p><a href="https://i.sstatic.net/UHyf4.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/UHyf4.png" alt="enter image description here" /></a></p>
<p>Now you can export the gradient map as an LUT:</p>
<p><a href="https://i.sstatic.net/n91vi.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/n91vi.png" alt="enter image description here" /></a></p>
<p>Go through the save steps and note where you save the LUT files to.  Back in After Effects, you can add the &quot;Lumetri Color&quot; Effect to your pre-comp, open the Effect, then Basic Correction, then on Input LUT click Browse and import the LUT you just created.</p>
<p><a href="https://i.sstatic.net/6sa9y.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/6sa9y.png" alt="enter image description here" /></a></p>
<p><a href="https://i.sstatic.net/JuDGg.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/JuDGg.png" alt="enter image description here" /></a></p>
<p>Your footage should be gradient mapped to the LUT you created.  Hope that helps!</p>
<p>EDIT:  couple notes, the <code>.3DL</code> files seem to work best and go for about 60 grid points.  Can add LUT's in After FX or Premiere Pro.</p>

CC BY-SA 4.0
2021-08-04T07:45:52.593Z
2021-08-04T08:57:13.330Z
2021-08-04T08:57:13.330Z
AutoBaker
<p>I know how to merge individual channel images in photoshop, but I can't seem to find a tutorial or even mention of how to achieve this with video clips. I have satellite footage shot at different wavelengths (R, G, B). I could take single frames and easily make images but I'd love to do a false color video. I guess I could do all of the frames individually but I'm curious, is there a way to do this in Premiere or After Effects? Any suggestions would be helpful.</p>

<after-effects><premiere>
Combine individual R G B channel videos into single false color video?
user1291
# Combine individual R G B channel videos into single false color video?

(Asked by: username_0 on 2021-07-16)

I know how to merge individual channel images in photoshop, but I can't seem to find a tutorial or even mention of how to achieve this with video clips. I have satellite footage shot at different wavelengths (R, G, B). I could take single frames and easily make images but I'd love to do a false color video. I guess I could do all of the frames individually but I'm curious, is there a way to do this in Premiere or After Effects? Any suggestions would be helpful.

**Tags:** after-effects, premiere


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## 2 answers

### Answer by username_1 on 2021-07-17. Score: 2 | Accepted answer

I would put all three files on three layers in either Premiere or After Effects, and play with the different blend modes and opacity of each layer until the image looks right. Screen, Add, or Overlay modes will probably be worth trying.

Premiere:
<https://helpx.adobe.com/premiere-pro/using/blending-modes.html>

After Effects:
<https://helpx.adobe.com/after-effects/using/blending-modes-layer-styles.html>

> **Comments:**
> **username_2**: If they are the Red Green and Blue channels then Add mode would be correct.  
> **username_3**: But OP is asking for false color.  Adding would give normal color.  If he means false color like the “Predator Vision” exposure tool in some cameras and broadcast monitors, he’d also need to posterize, then remap based on Y’, which I think can be done with the “ramp” effect in AE, if I remember correctly.  In DaVinci Resolve, there’s a false color effect that’s just drag and drop.  
> **username_1**: Very good point - please add as an answer!  

---

### Answer by username_4 on 2021-08-04. Score: 1

Just to build on @username_1 answer, to get false colour you will first need to get true colour by added the layers in after effects, use the "Add" blend mode as mentioned, which will get you true colour (rough enough without grading).

Not sure this is exact "false color" but it will work near enough for your purpose I think:

You will need to select all 3 layers and pre-compose them.

[![enter image description here](https://i.sstatic.net/wEjWa.png)](https://i.sstatic.net/wEjWa.png)

Then go into Photoshop, create a blank, empty document of the same size as your footage.

At the bottom of the layers panel, create a new Gradient Map adjustment layer.

[![enter image description here](https://i.sstatic.net/s4jiZ.png)](https://i.sstatic.net/s4jiZ.png)

Select a gradient map that fits your requirements, or create your own. This is what will map light and dark values to colours.

[![enter image description here](https://i.sstatic.net/UHyf4.png)](https://i.sstatic.net/UHyf4.png)

Now you can export the gradient map as an LUT:

[![enter image description here](https://i.sstatic.net/n91vi.png)](https://i.sstatic.net/n91vi.png)

Go through the save steps and note where you save the LUT files to. Back in After Effects, you can add the "Lumetri Color" Effect to your pre-comp, open the Effect, then Basic Correction, then on Input LUT click Browse and import the LUT you just created.

[![enter image description here](https://i.sstatic.net/6sa9y.png)](https://i.sstatic.net/6sa9y.png)

[![enter image description here](https://i.sstatic.net/JuDGg.png)](https://i.sstatic.net/JuDGg.png)

Your footage should be gradient mapped to the LUT you created. Hope that helps!

EDIT: couple notes, the `.3DL` files seem to work best and go for about 60 grid points. Can add LUT's in After FX or Premiere Pro.


---

