[Kalleheikki Kannisto]

Zoom out in the timeline so you can see the whole length of the composition. Does the image exist at that point in time?

[Kalleheikki Kannisto]

Looks like you’re very close. At least the text in on the same ground plane.

There is a 0,0,0 origin point in Element, which is the middle point of the grid that you see in Element Scene Setup window. That is the point where all new extruded elements are placed by default and, more importantly, what Element uses as the replicator origin point. Thus, if you place an object at that point and set the Replicator coordinates to a specific known 3D position in the AE coordinate system, the Element object will be in the same location.

Since you have the exact location already with yout 3D text, setting the Element 3D text at the 0,0,0 point in Scene setup and setting replicator origin to the 3D text position the two will align.

Now, there are other factors involved, the most important ones being:

1) the scale of the 3D text
2) the scale of the Element text
3) the alignment of the 3D text (left, right, center)
4) the alignment point of the Element text (many options)

On the other hand, if mathematical precision is not essential, you can also just manually position the 3D object by viewing it from multiple angles, scaling it and moving it around until it aligns from all views.

[Kalleheikki Kannisto]

Do you mean reverse the direction in which the hand is moving or flip the hand?

If you want to flip the hand when going beyond certain x or y value, apply this to the scale value:

scale_x=transform.scale[0];
scale_y=transform.scale[1];

if (transform.position[0]>1100 || transform.position[1]>750){
[-scale_x, scale_y]
}else{
[scale_x,scale_y]
}

replacing 1100 and 750 with your own limit values for x and y

[Kalleheikki Kannisto]

Hi,

Shadows cast from lights was added in version 2.

If you have version 1, it is probably better to proceed with your original plan, just align the text properly. Here’s how to do it (see image):

1) Align the origin point of the extruded text to the Element 0,0,0 point. In this case, since the text is left aligned, I’ve put the bottom left corner of the E3D extruded text at this spot.

2) Don’t make Element a 3D layer! Element is already a 3D effect which is applied to a 2D layer.

3) Set the origin point of the replicator to the same coordinates as your original text

The Element 3D text is now in the same location as your AE 3D text.

Now you can use your shadow catcher method to create the cast shadow.

[Kalleheikki Kannisto]

I suggest motion path, if you want the particles to start each individually. You will have to have them be born at the rate you want them to start floating up. Or, probably a better idea, use physics time factor to slow them down just when the first particle starts to float. Rough example attached (without physics time factor).

9183_delayedparticlefloatup.aep.zip

[Kalleheikki Kannisto]

Mocha, yes:

https://www.youtube.com/watch?v=1o9z1vNN9rY

Or the original AE single tracking point method. You could stabilize it first, then use the tracking data with the smooth expression to add back some of the original motion, as in:

https://www.videocopilot.net/tutorials/stabilize_shaky_footage/

Other option I haven’t tried but which looks promising, although it probably overkills to total smoothness:

https://www.prodrenalin.com/mercalli-v4-sal-plus/

But you could combine that with using the other tracking data (reversed and smoothed) to add the camera motion back in.

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[Kalleheikki Kannisto]

In Element V2 you can (and should) create the dropshadows with Element’s own shadow system with a point or spot light. You will need a matte shadow plane to catch the shadows.

https://www.videocopilot.net/docs/element2/render_settings/shadows/

The key to successfully placing your Element text in 3D is to use the “Set Origin and Ground Plane” after you’ve tracked the footage. That way Element knows where you ground plane is, and if you place something on the Element ground plane, it will be on the footage ground plane. If you set your origin right at the location you want your text, the center of the Element coordinate system will match to it.

[Kalleheikki Kannisto]

Not that I’ve done anything like this, but there are three key expressions that will help you here.

sampleImage(point, radius = [.5, .5], postEffect=true, t=time)

rgbToHsl(rgbaArray)

and

hslToRgb(hslaArray)

In theory, you should be able to sample the color values of two points (C1 and C2), then convert them to hlsa and see what the difference is. I’d imagine simply deducting one from the other will give you an array that you can apply to other colors (such as C3) by adding it to the value. They you can convert the result back to rgba values and apply the resulting color (C4) to something.

[Kalleheikki Kannisto]

Looks like the desk is as light as the light source in your shot, so Optical Flares cannot track the light by luminosity. I would just track the light and use a null to position the light source.

[Kalleheikki Kannisto]

Twitch install instructions:

https://www.videocopilot.net/products/twitch/help/