Motion tracking text on a moving white panel

[alicek21930254]

for a work project i am trying to overlay numbers onto a a 3d animated video i have made, tracking has not worked it doesnt seem to be able to follow the point. what else can i try? The point moves quite a lot ( in characters hand and it dances etc) i will attach a photo for example. someone please help!

[Mylenium]

Since this is pretty clearly a §d animation, the most sensible way would be to have the native 3D motion exported via whatever means the program may offer like e.g. Cinema 4D's AE export. Other than that it may simply be quicker to hand-animate a corner pin effect frame by frame then putting up with fixing botched tracks...

Mylenium

[alicek21930254]

Hi, i have had many problems doing this in the past from Maya and i no longer have the original animation files for this, only the exported videos ( there are 9 different animations) and each animation i need to have 20 different numbers on, with a render time for each in maya being about an hour this would be a very long process to go back to the origional 3d app. I really am needing to do this in post with the videos being as they are...

[Roei Tzoref]

a 3d animated video i have made

if you made the animation yourself, then you have access to the coordinates of these elements and can export this information to After Effects in various ways (depends on the app).

another option is to leave some sort of texture on the sign, even render just the sign, so the software have enough to track and use planar tracking app like Mocha Ae that comes with after effects to track the sign.

and you can always apply the numbers as an animation right in the 3d app as a texture to the surface of the sign. render separately and composite in after effects.

[alicek21930254]

Hi, i have had many problems doing this in the past from Maya and i no longer have the original animation files for this, only the exported videos ( there are 9 different animations) and each animation i need to have 20 different numbers on, with a render time for each in maya being about an hour this would be a very long process to go back to the origional 3d app. I really am needing to do this in post with the videos being as they are...

[Rick Gerard · Accepted solution]

I would use Mocha and put a spline around each of the corners of your solid. You add splines so you still end up with one layer. Let the corners be the detail instead of trying to track a large area with no detail. Something like this:

All four splines are on the same layer. The Classic workspace is the easiest option to get this done. Then make sure that the surface matches the corners of your sign, verify the track is OK by replacing the surface with a grid or the Mocha logo. You may have to do some of the Motion Tracking by hand, but it's really easy to do in Mocha, especially if the movement is pretty uniform.

When you are done use the Corner Pin tool in Mocha AE to attach your replacement image.

The next time you do this either texture the surface you want to replace with a grid or export the motion data.

[alicek21930254]

Thanks for that, this has worked so far! and next time i will just put the text on in my 3D software in the first place! or at least put a better texture on it! Thanks for the help