Darby Edelen
Forum Replies Created
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Well, the only way I’ve been able to reproduce any sort of a white fringe on a similar set up is by selecting “Straight Alpha” in the ‘Save’ section of the render settings. The fringe in that case looks much worse than what’s in your image though.
I’m not sure what else it could be. If you can share a project file with just 1 frame of the animation I’ll take a look, but nothing may jump out at me.
Darby Edelen
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It’s not quite clear where the problem lies from your description. Can you give more detail on how you’ve set this up? Are you compositing this outside of C4D? What objects/tags are you using in C4D?
Darby Edelen
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This has to do with the way AE treats the coordinate axis of a solid layer. The face of the solid is always pointing down the Z axis, which is the blue axis in C4D. You’ll need to make sure that your plane has its blue Z axis pointing in the direction you want your AE solid facing.
If the plane is still a primitive you can do this by setting its orientation to either +Z or -Z and then rotating the plane back into the correct orientation.
If it’s not a primitive then you’ll need to use the axis tool to rotate the Z axis into the correct orientation.
Darby Edelen
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I agree with Dan. I’d also add that if one is going to be faster it’d be the 2nd one, but if there is a speedup it may not be noticeable.
Reducing the sample size should add a little to any speed gains.
Also note that sampleImage() expressions disable ‘Render Multiple Frames Simultaneously.’ For this reason I almost always convert the expression to keyframes before I kick out my final render. This can be a pain if you need to adjust the expression later, so I only recommend it once you’re happy with the results. This command is run with the properties you want to bake selected and is located here:
Animation > Keyframe Assistant > Convert Expression to Keyframes
Darby Edelen
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Enable the ‘Matte Object’ property on a compositing tag applied to the building object. This will render the ‘Color’ into the RGB channels and render black (not visible) in the Alpha channel wherever the object is visible to the render camera.
Darby Edelen
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Quick tip: the intermediate result from keylight should give exactly the same result as using the keyed footage as a matte. Only you get it all on one layer!
Darby Edelen
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Noise in keylight is usually caused by the spill suppression. You can try and improve this by adjusting your despill bias, but you may not find a great solution that way. Another option would be to use keylight’s Intermediate Result with another spill suppression technique.
Darby Edelen
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[James Huenergardt] “Because you’ve ‘trimmed’ the clip so that’s not the ‘physical’ start of the clip.”
That black corner will also disapper if you have time remapping enabled on the layer.
Any ‘timeless’ layers (solids, images, shape layers, text layers, lights & cameras) will also not have that indicator.
Darby Edelen
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[Henry Gaunt] “Do you think this was done in Particular? Manually, or another plugin entirely? Maybe Form?”
Definitely possible in Particular. Try using a Layer Grid Emitter. One of the keys here is that the animation will need to play forwards a ways and then backwards in order to show the particles coming together. I usually like to do this by animating the Physics Time Factor from 1 to -1 at the point I want the particles to reverse time.
Darby Edelen
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To tie the edge of a 2D layer to a 3D layer I’d convert a point along the edge of the 3D layer into comp space and apply that to the 2D layer’s position, set the 2D layer’s anchor point on the edge you want tied to the 3D layer’s edge:
l = thisComp.layer("My 3D Layer");
my3dEdgePoint = [0,540,0];
l.toComp(my3dEdgePoint);
Of course this method makes some assumptions and has limitations. Hopefully it foots the bill in your case.
Darby Edelen