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camera stutter
I’m trying to sort out why a camera stutters when only using a y rotation on a slow pan.
I’ve set up a comp where images in 3d space are moving horizontally – in the x axis- accross the screen.
The camera is set to move only on the y as the images move accross. It seems at the 1/4 and
3/4 and almost the end of the rotation the camera stutters. All the images have only 2 keyfames and the camera only 2 y rotation keys. The comp is 30 secs long -so it’s a slow pan.
There is no DOF on the camera so no blur also I’ve tried motion blur on the images to no avail.
So I’m thinking it’s a camera issue.
Please help.
Thanks
J -
6 Replies
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Check the speed graph of the camera rotation. Select the Y-Rotation property and click on the Temporal Graph icon at the top of the timeline. You can adjust the temporal interpolation of the keyframes here.
If you’re not moving the position of the camera (or the point of interest, which should be disabled if you’re using rotation keyframes) at all then there shouldn’t be any spatial interpolation anomalies
Darby Edelen
Designer
Left Coast Digital
Santa Cruz, CA -
How do you diable the point of interest? The only key frames are y rotation and both are ease frames giving it a smooth S curve. Thanks for the reply BTW
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Select the camera, then hit layer->transform->auto-orient->off.
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John,
Does the stutter persist when you render the file out, or is it only showing in RAM previews?
Sometimes, you can get a few bad frames in your RAM cache and it causes the comp viewer window to display what appears to be odd problems. Clearing the RAM cache (Edit>Purge>All) usually fixes this.
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Thanks for all the response so far. The problem still exists in both Ram preview and render.
It is also a problem in another comp that has about 20 layers parentend to a layer moving in Z space with 2 position ease keys about 1 min apart. I haven’t had this problem using previous AE versions.
I’m using CS3 on OSX 10.4.10 ,8core Mac pro,9GB ram. I did find an interesting article on Adobe’s site.
Here’s the Url.
https://kb.adobe.com/selfservice/viewContent.do?externalId=320792&sliceId=2 -
Just to cover our bases one more time, the only keyframes you have on your camera are for Y-Rotation and you have turned Auto-Orient to off?
If you have your camera’s position or point of interest (which shouldn’t even appear if you have auto-orient off) properties animating at all then it may be a problem with spatial interpolation defaulting to auto bezier.
Darby Edelen
Designer
Left Coast Digital
Santa Cruz, CA
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