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3D Volume in a scene

Forum|Forum|7 years ago
July 21, 2018
2 replies
2289 views

Hi

I am trying to add a 3D Text on a video scene

I used track camera and then add text and camera but the result is not very convincing, when i start to moove in the video the text also mooves and do not really sticks in place.

is it a problem of tracking points ?

Should i use a dedicated 3d softaware to do this or i still can do it in after effect?

Is it possible to add a 3D text/object in this scene and make it absolutly static ?

Here a video of the result i get

3D text - YouTube

And here a screen shot of tracking points

https://image.noelshack.com/fichiers/2018/29/6/1532195133-help.jpg

Thank you very much for the help

This topic has been closed for replies.

Correct answer Kyle Hamrick

It looks like it's mostly staying in place, aside from that bit at the end. Proper lighting & compositing is going to be a big part of making it look like it belongs in the scene.

Regarding those couple bumps in the track, you have a few options:
1. Try some different track points.
2. Manually fix those bumps.
3. Since this shot is relatively stable aside from the handheld camera, you could try using the Warp Stabilizer instead for reversible stabilization. You'll end up making sort of a "sandwich" with your text in the middle, manually positioned into the shot.
Here's a good example of how to approach it: https://www.provideocoalition.com/using-reversible-stabilization-in-warp-stabilizer-vfx-for-screen-replacemen/

Sometimes the key to this kind of stuff is that you may have to try a few different methods to see which works best in your situation - or sometimes you just have to do it the old fashioned way!

michelr59529068

Known Participant

Anyone to help me? I would like to make the bottom of the grass more integrated, like that it might look more static.

Thank you !

Kyle Hamrick

Correct answer

Community Expert

It looks like it's mostly staying in place, aside from that bit at the end. Proper lighting & compositing is going to be a big part of making it look like it belongs in the scene.

Regarding those couple bumps in the track, you have a few options:
1. Try some different track points.
2. Manually fix those bumps.
3. Since this shot is relatively stable aside from the handheld camera, you could try using the Warp Stabilizer instead for reversible stabilization. You'll end up making sort of a "sandwich" with your text in the middle, manually positioned into the shot.
Here's a good example of how to approach it: https://www.provideocoalition.com/using-reversible-stabilization-in-warp-stabilizer-vfx-for-screen-replacemen/

Sometimes the key to this kind of stuff is that you may have to try a few different methods to see which works best in your situation - or sometimes you just have to do it the old fashioned way!

A

AskandLearnAuthor

Participant

Hey Kyle Hamrick ! thank you for your answer ! With warp stabiliser effect applied the video is not shaky anymore i did make everything again but it still mooves and doenst looks as i would like it to be, static in the grass

I am new to after effect and i have no clue how i should proceed now !

Kyle Hamrick

Community Expert

Hey Rick Gerard and everyone !

After a break i am back to work on my project.

I just tried to apply all the advices you gave me.

1- I Removed the lens distortion using the effect optics compensation ( FOV 75.8)

2- Then after pre composing i did track the comp, i added a 3D solid with a grid effect linked to it. Then after aligning the grid to the road i aligned the text to the grid and mooved the depth of the text ( Z angle).

After that i pre composed again, and added a warp stabilise effect.

Here the new video result -> Another try - YouTube

What do you think?

it seems to stick better and better perspective but it stills mooves a bit !

I think thatKyle Hamrick's solution is a good option to make it more integrated to the field don't you think ?

One idea that might work on the grass is to simply create a solid or shape layer, lined up along the bottom and just barely covering the lower edge of your text. Put this directly above your text layer, and set the text layer's Track Matte dropdown to "Alpha Inverted."
Apply the Roughen Edges effect to this solid/shape, and fiddle with the settings a bit. It should give a nice organic edge that trims away the very bottom of your text."

But as i said before , i do not have the possibility to choose "alpha inverted' for the text layer "zaragoza 2" even when the solid is above it.

On the other hand, if i put the text layer above the solid, this option appears. Rick Gerard told me that Ray-traced 3D gives up things like effects and blend modes on 3D layers, so i have no idea how i should proceed

Thank you in advance for your help!

ps: Should i color grade after or before the 3D text layer is added ?

The slight slip at the end makes me think your text isn't placed QUITE right in the scene. It's close, but it might be too close/too far in Z, or something to that effect. Maybe try extending that grid (or making another) that goes over the grass surface, so you can confirm that you have that perspective correct.

Regarding the Ray-Traced renderer: You may also try the C4D renderer (same place), as it's the more current solution. You will still have most of the same limitations, though. If you need to use matting capabilities in conjunction with that, pre-composing is usually the best solution.

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