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Weird (user?) problems with cameras

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bruno kochWeird (user?) problems with cameras
by on May 24, 2011 at 11:57:51 am

Hi!
I'm working on a project with several 1-2 second shots of the same scene, so I was using one camera and I just keyframed it to change to the next shot instantly within 2 frames.
This caused a weird visual glitch when the shots changed, and it felt very uncomfortable.
So i did what most people would do; i tried to make the glitch disappear.
I ended up splitting the camera on the first frame, and then again at the second frame. I deleted the frame between the two of them, and i put the second frame ontop of where the first one was. Let me show you an illustration, because it may not be easy to understand:

This worked just fine until i noticed something; i can't render one frame just about before the the second part of the split, or even ram-preview it at quarter quality. This occurs at every shot.
I tried moving around the frames and changing the overlap, but it doesn't matter.
Can you tell me why this occurs, and if there is an easier way to solve it?

Thanks for your time!


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Dave LaRondeRe: Weird (user?) problems with cameras
by on May 24, 2011 at 2:38:48 pm

It appears you're overlapping camera layers. AE will only react to the uppermost camera layer.

To move a camera to a different angle instantly, use cameras a two different angles. You can also use Hold keyframes to accomplish the same thing with one camera:
http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c11...

Click on the Hold Interpolation link in blue at the top.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Angie TaylorRe: Weird (user?) problems with cameras
by on May 25, 2011 at 7:57:28 am

Hi there,

Did you try changing the first keyframe to a Held keyframe? That should work, just right-click on the keyframe and choose "Toggle Hold Keyframe". This will force the value to remain the same till the next keyframe.

Hope this helps :-)

cheers,

Angie

Angie Taylor animation & illustration for television, film, web and devices

http://www.angietaylor.co.uk
Twitter: theangietaylor
Linkedin: theangietaylor
http://www.facebook.com/pages/Angie-Taylor/118378194869002



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bruno kochRe: Weird (user?) problems with cameras
by on May 25, 2011 at 3:00:39 pm

Hi!

Thank you for your repsonses, but it didn't solve my problems for some reason.
I tried using hold keyframes just as you suggested.
AE still can't render the frame belonging to the hold keyframe. It renders the one before and after it just fine.
And now that i'm using this method i got another problem: the first frame of the second shot has some remnants of the first shot, like if i was fading out the first shot.
Here is a picture of the timeline of the shot in question:

I'm pretty sure i'm doing something wrong, i just can't seem to find out what it is.


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Angie TaylorRe: Weird (user?) problems with cameras
by on May 25, 2011 at 3:22:33 pm

Hi there,

If you want to leave gaps you could try selecting "Active Camera" - gaps will then render with a default camera.

cheers,

Angie

Angie Taylor animation & illustration for television, film, web and devices

http://www.angietaylor.co.uk
Twitter: theangietaylor
Linkedin: theangietaylor
http://www.facebook.com/pages/Angie-Taylor/118378194869002



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