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Re: 3D camera tracking problem: footage or tracking?

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Darby EdelenRe: 3D camera tracking problem: footage or tracking?
by on Aug 6, 2012 at 9:22:35 pm

The clip looks okay. It looks very close to a nodal pan which changes the camera tracking because there is little to no parallax.

Without parallax the camera tracker may have a difficult time determining things like the camera's focal length accurately. Take a look at your camera's motion path in one of the Custom Views and see if it's moving significantly. Were you standing still when you shot this? Do the camera's keyframes make sense? Does the focal length assigned to the composition camera seem right?

If not then you might try re-tracking the scene with "Rotating Camera" selected for "Track Validation" in the Tracking section. When solving you should also choose "Rotation Only" in the Solve section.

Beyond that I'd recommend making sure that you're not getting track points in the sky by creating a matte and setting your Matte Source in CameraTracker before tracking. The sky is too uniform to track reliably and too distant to really help in the camera solve.

Also if you know the focal length you used and film back for your camera then manually entering them may help get a better solve.

Darby Edelen


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