I shot a wheelchair user in my studio yesterday, I had wanted him to spin in his chair on the spot, but in the end, I used a dolly and semi-circular track to move around him, and he remained still. I didn't get everything centred though, so as the clip plays, he drifts from side to side a bit. I'm trying to figure out the best way of fixing his centre point to the centre of a comp, so he stays centred while the shot plays. Any ideas?
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[Donald Mitchell]"I didn't get everything centred though, so as the clip plays, he drifts from side to side a bit."
I know Walter, one of those Guys Who Really Knows His Stuff, recommends tracking the shot or using Warp Stabizer, but if the description above is accurate -- side-to-side drift on an arcing shot -- I'm going to stick with my initial recommendation of animating position.
You would only have to change the shot's horizontal position. If it's a case where the camera was locked down on the dolly, the drift is occurring as some kind of a trigonometric function and you may only need two or three keyframes, plus a little tweaking in the Graph Editor.
Now, if the dolly track or the wheels were rough, that's a different story....
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