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Darby Edelen

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Member Since:
March 21st 2007
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How to access pixel RGB values from a script? (not an expression)
by Paulo Jan 6 days ago
Hello: This is a question about scripting, not strictly about expressions, but I thought it would fit better here than in other forums. I am writing a script that needs to access the RGB pixel values
Re: How to access pixel RGB values from a script? (not an expression)
by Darby Edelen 1 day ago
Paulo Jan "-Set given pixels to a certain color, based on their brightness level (as in the image above)." You could use one of the keyers (Color Range Extract ) and Channel Solid Composite to do tha
Luminance driven by Color
by Seth Olson 3 days ago
I'm used to Maya's shader nodes, where several attributes can be driven by a single attribute. Is there a way to achieve the same thing in C4D Example: Is there a way to have the color channel be the
Re: Luminance driven by Color
by Darby Edelen 2 days ago
It's possible to link some values and textures through expresso but it's not as user friendly as the hypershade. You might like the free cmNodes plugin: http: www.cmstuff.com Darby Edelen
Is there a way to Key Transparency?
by Scott Johnson 2 weeks ago
I have a video in which the subject is between two different shade of green. One green is deep blue green, and the other is brownish yellow green. When I use Keylight to remove the deep blue green, th
Re: Is there a way to Key Transparency?
by Darby Edelen 1 week ago
Scott Johnson "The above forum contains information on the video in question that I am trying to edit. I think what I am saying is, why should a green screen or green background have to be near perfe
Using Multiple Checkbox Controls - Is there a way to turn one checkbox on at a time?
by Nadia Husain 1 week ago
I am using 4 different checkbox controls in one null layer to control different layers within different nested comps. Is there a way to code these checkboxes to where when one is checked on, the other
Re: Using Multiple Checkbox Controls - Is there a way to turn one checkbox on at a time?
by Darby Edelen 1 week ago
Not possible. I'd suggest using a single Slider control rounded to integers instead. Darby Edelen
Share the light! :D
by Joe Colling 2 weeks ago
Can anyone tell me a method to make the light (or colors) from one layer affect another layer, without making any of the layers into 3d layers I have a video that goes through colors and I want those
Re: Share the light! :D
by Darby Edelen 2 weeks ago
Blend modes might get you there. If you're working at 32bpc you could use multiply with an exposure effect on the 'color' footage to control intensity. Otherwise try soft light or overlay if you're wo
Slider Controls
by Max Baxter 2 weeks ago
Hi, I don't know if this in the right area of of the forum for after effects, but this is also getting posted into other ones. I want to take multiple PSD files into after effects and then use a slide
Re: Slider Controls
by Darby Edelen 2 weeks ago
I'd put all of the Photoshop files into one composition, trim them each to be 1 frame long and then use Animation Keyframe Assistant Sequence Layers... with no overlap. This will place each layer afte
Change position in a Time Remapping Loop after each loop
by Diego Mellado 3 weeks ago
Dear all, I am trying to move a fixed amount of pixels a layer after each cycle on a Time Remapping loop (loopOut("cycle")) I am not sure if this is possible, but it seems that using type="offset" can
Re: Change position in a Time Remapping Loop after each loop
by Darby Edelen 3 weeks ago
Do you want the layer to jump a certain distance when a loop completes or move a distance over the life of the loop Darby Edelen
sticky texture to a polygon
by Hamid Rohi-Bilverdy 4 weeks ago
Hi. I made a Projection mapping with the camera calibration tool. It is an image of a street and a house. I have used the knife tool to create a polygon of the door. I want to animate the door. How do
Re: sticky texture to a polygon
by Darby Edelen 4 weeks ago
Right click your camera projected texture tag and use "Generate UVW Coordinates." This will add a UVW tag with the camera projection baked into it. The object will need to be editable for you to do th
Is it possible to render multiple reflections on different layers?
by Hamish Paterson 1 month ago
Hi there, I've got a model of a shiny black iPhone. I've got several objects reflected on it and would like to be able to control the reflections separately in After Effects. Is there a way to do this
Re: Is it possible to render multiple reflections on different layers?
by Darby Edelen 4 weeks ago
To properly account for obscuration I believe you'd also want to apply a compositing tag with matte object enabled and set to black on the object you don't want appearing in the reflection. I really w
double trouble ....
by Sid Olomi 1 month ago
hey guys i had a question about R12 Grid issue but didn't get a proper solution for it it is not showing in the prospective view at all done everything possible now i have one more question about the
Re: double trouble ....
by Darby Edelen 1 month ago
It's been a while since I've used R12 and there were a lot of changes and new features with regards to the grid in R14. That said have you made sure that 'Grid' is enabled in the Filter menu of your P
Collider/ Rigid Body Dynamics Problem
by Pravin Chottera 1 month ago
I have a flat rectangular cube (dynamic body) falling onto a plane (collider body), but there are a few frames where the corners of the cube sink through the plane. It resolves correctly, but obviousl
Re: Collider/ Rigid Body Dynamics Problem
by Darby Edelen 1 month ago
Try increasing the "Steps per Frame" in the Expert tab of the Dynamics Tab in the Project Settings. In order for a collision to be registered C4D needs to know how often to check for collisions. By de
Making a comp act like a Flash movieclip
by Eric Guiliani 1 month ago
Hey Guys- Coming from being a Flash developer years ago, I always wondered one thing. Is there a way to stop() or play() a composition like you can with a movieclip in Flash... preferably using Expres
Re: Making a comp act like a Flash movieclip
by Darby Edelen 1 month ago
You can apply expressions to time remapping but the implementation will depend entirely on what functionality you need and which limitations you're willing to accept. Darby Edelen
Using a sum of the Alpha Channel of all frames as a Mask
by Diego Mellado 1 month ago
Hello everybody! I am looking for a fast way finding out where is "something" in an animation using its alpha channel, after taking out a chroma. If I am not wrong, if I add (in a logic way of thinkin
Re: Using a sum of the Alpha Channel of all frames as a Mask
by Darby Edelen 1 month ago
I'd first shuffle the Alpha into the RGB channels using a Channel Shift Channels effect with these values: Take Alpha From: Full On Take Red From: Alpha Take Green From: Alpha Take Blue From: Alpha Th
Opinions on time needed for motion tracking smartphone screens
by Jake mendez 2 months ago
Hey guys, was hoping to get your opinion on this. I've been doing mo graph for several years commercially, but admittedly have not done a motion tracking job in a couple of years. I'm familiar with mo
Re: Opinions on time needed for motion tracking smartphone screens
by Darby Edelen 2 months ago
Jake mendez "I had originally told them to have a green screen on the phone, and the DP emailed back saying he likes white so theres no green cast off on the flesh tones." Green cast is incredibly ea
Trouble with transparency layers! - really confused!
by Pedro de Sa 2 months ago
Hello! I've been having a real hard time trying to figure out what do I have to do in order to render a video. The videos are portraits of citizens of Buenos Aires talking and moving a lot with a blac
Re: Trouble with transparency layers! - really confused!
by Darby Edelen 2 months ago
Creating transparency may not be entirely necessary in your case. Usually transparency is useful if the footage is going into a digital pipeline (further compositing work). In the case of projecting o
How to make curved motion using my existing expression?
by Darryl Torke 2 months ago
Hi, I have a very simple expression that uses the 'easeIn' expression, and it looks essentially like this: A= 0,500 ; B= 2000,500 ; easeIn(time,0,2,A,B); As you can see, the motion moves in a line fro
Re: How to make curved motion using my existing expression?
by Darby Edelen 2 months ago
Use another "template" layer's motion path between 0 and 1 seconds to define the path the layer should follow. origin = effect("Origin")("Layer"); template = effect("Motion Template")("Layer"); start
Changing the color of 3d objects
by Toni Välimäki 2 months ago
I want to animate changing color for the sofa seat. So the armrest stays the same color, but the seat changes color. I know how to change the color, but how do I make keyframes for it. I crtl clicked
Re: Changing the color of 3d objects
by Darby Edelen 2 months ago
Is there a texture applied in the Color channel as well That would overwrite the chosen color. Darby Edelen
cut away technical model using spline mask
by joey campbell 2 months ago
Hi - I'm about to start modelling a radiator thermostatic valve - roughly comprised of a screw twisting inside two tubes. What I'd like to do is show a cutaway of the two tubes so that the screw can b
Re: cut away technical model using spline mask
by Darby Edelen 2 months ago
This might be worth checking out: http: www.plugins4cinema4d.com rboole.html It performs a boolean at render time and shouldn't create the horrible topology that the standard C4D Boole object does. It
All Attribute Text is Orange
by Richard Windsor 2 months ago
Quick question. All of a sudden all of the text for my attributes are orange. Its doesn't seem to hurt anything but it worries me for some reason. Anyone know why this happens
Re: All Attribute Text is Orange
by Darby Edelen 2 months ago
Usually that indicates that those attributes are selected. Cinema may be confused. Darby Edelen
using valueAtTime on object with wiggle
by Vesko Anev 2 months ago
Hello if anyone can help.. Im trying to make one light follows another with valueAtTime(time-1) for example , but the leading light has a wiggle expression on position . As a result the one witch is f
Re: using valueAtTime on object with wiggle
by Darby Edelen 2 months ago
The short answer is that a half second delay between layers is a large delay when the wiggle has a frequency of 3. Try a delay of 0.1 or 0.05 instead. Darby Edelen
using layer control to select color or the ramp effect for layers
by Adam Tanner 2 months ago
Hi, I'm trying to create a system in which a user can use a layer control drop down menu to choose the color of specific layers. The catch is one of the color options is also the ramp effect. Right no
Re: using layer control to select color or the ramp effect for layers
by Darby Edelen 2 months ago
Adam Tanner "The expression I use works great for changing the color of a fill on a solid, but I'm not sure how to make it deactivate the fill and add a ramp. Any ideas " My suggestion would be to on
2 sided layer...my god
by Tayler Ursu 2 months ago
Hey! When I change the x rotation 180 degrees to flip the circle.. the expression i have doesnt change the color in time. any tips 7158_hmmmm.jpg.zip try { layerCameraVec = comp("Green 2 Color&qu
Re: 2 sided layer...my god
by Darby Edelen 2 months ago
I see now that you have the layer that should be changing color in a pre-comp. I'd approach this differently in that case. In the pre-comp trim the gray layer so that it exists at 0 seconds and ends b
Why does cinema 4d smooth this out when I render?
by Fed Fef 2 months ago
Hi everyone! I am a bit of a newbie with cinema 4d but I have worked with 3ds max and sketchup for a while now. ok so I drew this model on sketchup and then imported it on cinema 4d as an obj file, ev
Re: Why does cinema 4d smooth this out when I render?
by Darby Edelen 2 months ago
That looks very much like you have a Phong Tag applied to the object that either has the 'Angle Limit' checkbox disabled or the 'Phong Angle' set too high. The Phong Tag smooths face normals across ed
+1
Import Path from Illustrator
by Irfan Baloch 2 months ago
Hi Everyone, I am just having a little problem with my logo. I just created my logo in illusstrator and i import it to cinema 4d to make it 3D. The problem is that i made a rectangle shape and i put m
Re: Import Path from Illustrator
by Darby Edelen 2 months ago
I think you either need to use the Pathfinder to Minus the text paths from the rectangular path in Illustrator or use the Spline Mask object to create the cutout in C4D. Darby Edelen
Form grid not perfect
by Chris McCard 2 months ago
Anyone here ever tried layering form over form grid at a smaller size I'm experiencing some weird issues, I'm pretty sure I did the math correctly and it should be lining up however I'm banging my hea
Re: Form grid not perfect
by Darby Edelen 2 months ago
Chris McCard "Heres my setup, I have 2 layers each with form on them one of them is 10000px X 10000px with 500x500 particles and the other is 2000px X 2000px with 100x100 particles - the math all see
File: Modifying Vertex Map with Effector
by Darby Edelen 2 months ago
c4d file An Xpresso setup that passes a Mograph Effector's strength into a Vertex Map. http: f1.creativecow.net 7152 modifying-vertex-map-with-effector
File: Screen Reflections
by Darby Edelen 3 months ago
zip file Convincing reflections on a flat surface in AE. http: f1.creativecow.net 7080 screen-reflections
Alpha Pre multiplied and Matted with Color in photoshop
by Ashton Rosendahl 3 months ago
Hi Everyone! I ran in to this problem recently and cannot seem to find any solutions on the internet. In After effects if you right click on an image from your project tab, go to interpret footage, an
Re: Alpha Pre multiplied and Matted with Color in photoshop
by Darby Edelen 3 months ago
There are a couple of options that may work for you. One is to apply the alpha as transparency to a layer and use the Layer Matting Remove Black Matte function. Unfortunately this doesn't work when us
File: Unpremult/Premult Compositing in AE
by Darby Edelen 3 months ago
zip file This matches a Nuke composite that uses Unpremult on the render passes before merging and a Premult after merging. http: f1.creativecow.net 6978 unpremultpremult-compositing-in-ae
File: Fixing Premultiplied Edges
by Darby Edelen 4 months ago
zip file Compositing against black before re-introducing alpha. http: f1.creativecow.net 6964 fixing-premultiplied-edges
Playing bottom part of clip before top part.
by Julius Juul 4 months ago
Hey CC. So i was looking at this clip and trying to figure out how to achieve this effect. https: vimeo.com 77693017 (especially the part from 0:47 where he comes around the corner) I figured it must
Re: Playing bottom part of clip before top part.
by Darby Edelen 4 months ago
You should be able to get a similar result with the Time Time Displacement effect. You'd use a linear ramp as the input. I'd highly recommend working in at least 16bpc as otherwise you wouldn't have m
Basic Time Remapping question
by Dave Wittekind 4 months ago
I'm trying to follow a tutorial in Trish & Chris Meyer's book about time remapping. I added the TR property, but after that, they say to twirl down the arrow just to the left of the stopwatch to revea
Re: Basic Time Remapping question
by Darby Edelen 4 months ago
I'm willing to go out on a very sturdy limb here and claim that the jump from AE 6.5 to AE 7 was probably one of the biggest in the history of the application... well, definitely in the interface :) G
Keying
by Marc Lucas 4 months ago
Why do you get a black line like in the pic when pulling a key with Keylight 1.2 It has happened more on one side than the other. Using XDCAM from an EX1
Re: Keying
by Darby Edelen 4 months ago
Marc Lucas "The side it happened on was the side the back light was on so yes something to do with how the light is interacting with the footage and green screen when trying to key" That makes sense.
File: MoExtrude with a Fracture Object
by Darby Edelen 5 months ago
c4d file For added control. http: f1.creativecow.net 6775 moextrude-with-a-fracture-object
Counting from 0-150 in 151 frames ?
by Louis Ferrante 6 months ago
OK I am trying to do degrees in increments of 1 for a weather app on android and I am having trouble with the expression seen below! 4 Is not the right count duration and I cant seem to figure out the
Re: Counting from 0-150 in 151 frames ?
by Dan Ebberts 6 months ago
How about this: Math.min(timeToFrames(time),150) Dan
+1
Darby Edelen liked this 6 months ago
Thin white outlines around objects after "New Layer via Cut" - why???
by Eddie Adams 9 months ago
I'm selecting a part of the image using the magnetic lasso tool, then going "New layer via cut" -- and it results in a a thin white line where my selection was. Why don't the two layers merge seemless
Re: Thin white outlines around objects after "New Layer via Cut" - why???
by Darby Edelen 9 months ago
This happens because the selection is anti-aliased and alpha blending between the semi-transparent pixels (like those that result from anti-aliasing) does not resolve to a fully opaque pixel. In After
Suppress greenscreen reflection on metalic surface
by Matej Hajaš 9 months ago
Hi there everyone. First, sorry for my English. It is not my mothertongue. Secondly. I have a little problem and and i'm getting desperate. I've got clip shot in front of green. There are only hands h
Re: Suppress greenscreen reflection on metalic surface
by Darby Edelen 9 months ago
Those answers work for keying. For suppression I recommend this: http: forums.creativecow.net readpost 2 1027628 The 50 50 split on Red Blue in the Channel Mixer is a good starting place. You can adju
Export separate video channels R, G, B, etc
by Jim Arco 10 months ago
I have been working with some video in Photoshop CS5.5 and I'd like to be able to export save one channel of the video file. So, for instance, I'd like video (or image sequence) of just the red channe
Re: ALLLRIGHT !!! was Re: Export separate video channels R, G, B, etc
by Darby Edelen 9 months ago
Interesting. Well if you'd like any help finding alternate methods to achieve a similar result feel free to post back. I'd like to see the miraculous still frame before after :) Darby Edelen
File: Underwater Red Correction
by Darby Edelen 9 months ago
zip file Building a new Red channel from the RGB channels. http: f1.creativecow.net 6259 underwater-red-correction
Transform without perspective distortion (?)
by Tiago Cotrim 10 months ago
I'm a fairly advanced PS user and maybe for the first time ever I'm trying to do something I can't find out how to or anything about it, which is to "distort" an image by squeezing one of its sides, b
Re: Transform without perspective distortion (?)
by Darby Edelen 9 months ago
Expanding or contracting one side of a rectangle is going to necessarily introduce distortion unless the software has a way to scale the contents of the rectangle adaptively across the rectangle to re
can't fade to transparency
by Martin Pitchard 10 months ago
Pretty new to Photoshop - using CS6 - and can't solve what must be a pretty basic opearion. I want to fade images to trasparency from left to right, right to left, etc. I've followed tutorials using t
Re: can't fade to transparency
by Darby Edelen 9 months ago
What you've done in the image you posted is blended a white gradient with transparency into your image. If you look at the layer thumbnail in your layers panel you may notice that the one on the left
Distort underlaying layer like heat exhaust?
by Eric Chard 1 year ago
How would one distort the underlying layer as if affected by a high-temperature exhaust TNX! ++++++++++++++++ "Putting the HARM in 'harmonica' since 2005." ++++++++++++++++
Re: Distort underlaying layer like heat exhaust?
by Darby Edelen 12 months ago
John Cuevas "I'd create a heat like look with fractal noise in a precomp. Drop that into the main comp and use that to drive a Distort Displacement Map effect." To take that a step further you could
Compositing mountains in to this footage
by Malcolm Birch 1 year ago
Hi there, I have some footage that I would like to add some mountains or some such in to the background of and it's not something I have really learned to do properly before. I thought maybe you would
Re: Compositing mountains in to this footage
by Darby Edelen 1 year ago
Malcolm Birch "An issue I found was getting the footage to look like it belongs there and not like one of those obvious green screen shots in old movies." Here's a short look at how you might use col
Ramping high Frame rates back to real time using phantom footage
by Wim Steytler 1 year ago
Hi guys. I am shooting a job where there will be alot of ramping required. So for arguments sake - we shoot a shot at 1000fps and I want to ramp it back to 25fps(realtime) in post. From what I hear it
Re: Ramping high Frame rates back to real time using phantom footage
by Darby Edelen 1 year ago
Wim Steytler "So for arguments sake - we shoot a shot at 1000fps and I want to ramp it back to 25fps(realtime) in post. From what I hear it looks terrible as I have to loose frames and add motionblur
+1
File: Sky Keying
by Darby Edelen 1 year ago
zip file Pulling a good key from an overblown sky. http: f1.creativecow.net 5797 sky-keying
File: Mirrored 3D After Effects Layers
by Darby Edelen 1 year ago
aep file A sample of mirroring across a plane. http: f1.creativecow.net 5739 mirrored-3d-after-effects-layers
File: Wheel Rotation
by Darby Edelen 1 year ago
aep file Two-axis wheel rotation http: f1.creativecow.net 5713 wheel-rotation
How to determine size of object in composition after mask applied
by Phil Johnson 1 year ago
Hi I hope someone can help me. I'd like to know how I can determine the exact dimensions of an object layer in the composition window after I've applied a mask to it. Like this: http: 2share.co.za Fil
Re: How to determine size of object in composition after mask applied
by Darby Edelen 1 year ago
There are a couple of ways to do this. My recommendation would be to select your mask and press cmd-shift-m ctrl-shift-m (Mac PC). This will give you a dialog that has the offsets of the mask's boundi


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