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  • Odd 3d movement

    Posted by James Woods on December 10, 2007 at 10:19 am

    Hey everyone.

    First time poster here!

    Am running AE 6.5 pro at work and a strange “bug” has got me stumped.

    Have about hundred layers of video spread over 4 planes in 3d space (25 a piece)
    On each plane there is a solid with a mask and stoke effect to surround each video with a hexagon shape and these hexagons are linked together to form a nice “net” style graphic.

    The camera darts around making each piece of video almost full screen, when every piece of video has been viewed it travels forward in 3d to the next plane and repeats until every piece of video has been viewed.

    The problem I am having is that the videos that are set behind the one currently being viewed shift in X and Y a great deal when the camera is moving, giving the effect that they are set further back than the solid, which they are not. Every video has the same Z coordinates as the appropriate solid.

    The effect is greater the further away the video

    James Woods replied 18 years, 5 months ago 3 Members · 11 Replies
  • 11 Replies
  • John Spencer

    December 10, 2007 at 2:27 pm

    I’m not 100% clear on your problem but if it’s what I’m thinking it is it might work to adjust your cameras MM settings. Say for instance if it’s set to 35mm you might increase it up to the next mm setting. If that doesn’t work then set it back to what you had it and you might have to move the layers closer to the camera. to give them a “fake” distance-to-camera-ratio you can animate their scale as they get closer to the camera. It may be a pain in the butt, but then again 3D in After Effects always has it’s unknowns. If this doesn’t work I’m not sure what the issue is.

    -Spence.

  • Steve Roberts

    December 10, 2007 at 3:56 pm

    Regardless of how the Z-coordinate values appear, are the layers in the proper (visual) position when viewed in other views such as top/side/perspective?

    Do you have any parenting going on? The position of a parented layer may not show the Z-position you expect.

  • James Woods

    December 10, 2007 at 4:27 pm

    Hey Steve.
    Thanks for getting back to me.

    Regardless of how the Z-coordinate values appear, are the layers in the proper (visual) position when viewed in other views such as top/side/perspective?

    Yeah they are all shown to be in a position that is exactly the same as the solid with the stroke when viewed from the top and front.

    Do you have any parenting going on? The position of a parented layer may not show the Z-position you expect.

    I did have parenting to start off with, but I removed it all when this problem started and typed in the positions manually.

  • James Woods

    December 10, 2007 at 4:29 pm

    Thanks for replying Spence.

    AE is busy rendering until the small hours of tomorrow morning now, but when its done, I will give my camera some tweeks and see if it changes.

  • Steve Roberts

    December 10, 2007 at 4:56 pm

    James, if it’s still not working, try duplicating the comp and renaming the dupe “test” or something. Move the camera to a point where you see the problem, then delete everything outside of camera view. (keep the camera) The purpose of this is to simplify the troubleshooting. See if you get a different result.

    Can you post a screengrab of the setup, from an overall perspective view, maybe with the camera layer selected to see its path?

  • James Woods

    December 11, 2007 at 10:31 am

    Well I tried changing the camera to another default, and the amount that the images were shifting did change, but they were still visible as being in the wrong place.

    A couple of stills are here:

    https://www.mailbigfile.com/a04592a4bebe87f8c26f2c22f1c564a0/listFiles.php

  • James Woods

    December 11, 2007 at 10:32 am

    A few stills are here….

    https://www.mailbigfile.com/a04592a4bebe87f8c26f2c22f1c564a0/listFiles.php

    Not sure how long that link will stay active.

  • Steve Roberts

    December 11, 2007 at 1:29 pm

    Thanks, James. I see the problem, but not the solution yet.

    Could you post the AEP somewhere? You don’t have to include the sources… AE’s automatic placeholders will be fine.

  • James Woods

    December 11, 2007 at 1:59 pm

    Cheers for looking Steve.

    https://www.mailbigfile.com/c5b35879b6ef2e67605cdd4181d79fd4/listFiles.php

    Probably best to work in comp “Thursmorn2” or similar.

  • Steve Roberts

    December 11, 2007 at 2:53 pm

    Hi James,

    I’ve opened the project, looking at ThursMorn2 and … you’re not going to like this … I see no parallax. Every video is lined up in its proper hexagon. It looks good, I’m , er, sorry to say.

    But there is a clue. I don’t have any FE effects installed, so AE couldn’t load your “FE light sweep”. That’s the only difference I can see between you and I, aside from our setups, and the missing fonts & footage. (I’m on OSX, AE CS3, without OpenGL active.) Although Light Sweep shouldn’t bugger things up.

    Sorry James, but I’m at a loss. I don’t see any parenting or collapsing in your project, which I thought might contribute to the issue, and it’s hard to troubleshoot a project that seems to be working fine.

    I can only ask … have you upgraded to 6.5.1? I hope that upgrading to CS3 isn’t necessary. That wouldn’t really make sense.
    https://www.adobe.com/support/downloads/detail.jsp?ftpID=2724

    Can anybody else help?

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