-
Motion Tracker is Picking a Fight With Me
As you may have guessed by the subject, I’m having some difficulties with the motion tracker. I’ve used it before and gotten good results (so I know it’s possible) but it’s got something against me right now.
My shot is a still image of Mount Rushmore that I’m panning across the screen and I’m trying to superimpose another image overtop of George’s face. The tracker refused to attach itself to any part of the rock so I figured I could pre-render the clip out to a movie with a black dot (painted) on the sky. I figured the black over a light blue sky would be easy for the tracker to pick up, and the black dot could easily be concealed after.
How wrong I was.
This worked for about 10 frames before the tracker went ballistic and started going all over the screen. I figured I’d try the same idea again but instead of painting a dot on, I would remove a dot with the eraser, but again the tracker had a mind of its own. I’ve tried the settings for RGB, Saturation, and Luminance and the problem occurs each time (at the same frame).
I’ve been trying to adjust the position frame by frame and it looks ok at parts but is, of course, far from perfect.
Does anyone have any tricks/tips for how to pull this off?
Thanks,
Mike -
3 Replies
-
I’ve got no tips whatsoever I’m just here to stand in the corner and chant “fight! fight! fight! fight!” (I’ve always wanted to see that motion tracker whacked around a bit, never managed to make it work well for me at all).
—
Only in after effects do children get to pick and whip their parents.
https://hennell-online.co.uk -
Motion Tracker ended up running home to cry to its parents… And that gave me an idea!
I took a freeze frame of the manipulated image, dropped it into the panning image comp, adjusted it to last the duration of the pan, and PARENTED it to the original image!
Occam’s razor comes through in the clutch again.
-
If you’re using After Effects CS4, I have a one-word answer:
———————————————————————————————————
Todd Kopriva, Adobe Systems Incorporated
putting the ‘T’ back in ‘RTFM’ : After Effects Help on the Web
———————————————————————————————————
Reply to this Discussion! Login or Sign Up