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Light Glitches
I’ve got a 2.5 dual G5, running AE CS3 Professional on a 10.4.11 OS.
I’ve been getting weird glitches whenever I am moving a document in 3D space and have lights shining on it. It appears in the rendered animation as one frame where you can see the fields…a bunch of thin black lines.
I cannot see it IN after effects, but only after it is rendered.I’ve posted about this before had got the advice to lessen the angle of the 3D tilt and to also try putting an empty adjustment layer above the 3D document layer. That fixed it…sometimes. Other times, I just removed the lights and used ellipses instead.
Any idea where this glitch is coming from? I’ve been doing the same sort of lighted document moves for years and this issue only popped up since I’ve changed to CS3. Is it CS3? Or my old computer? Or the OS??
Thanks for any info or guesses…
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4 Replies
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go to menu bar>after effects>about after effects… and make sure you have the latest update for cs3, it should be 8.0.2 (maybe a few extra numbers after the 2). if you don’t, just download the update from adobe.com/downloads/updates…
to make sure the render settings are good, when you add a comp to the render queue (or make move), click the render settings and make sure that opengl renderer is not enabled… (this is not likely, but its worth checking).
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
I’ve got CS3 8.0.2.27
Open GL is not enabled.
I have 16 bit color depth.
I’ve tried rendering with different codecs and it shows up in the rendered animation regardless of the codec.
It’s incredibly hard to troubleshoot since it simply does not exist in the composition itself.It disappears if I turn the lights off, so it is definitely the lights and not just the 3D move.
THe z position of both the document and the light are not moving dramatically.I just tried rendering it with no fields and that did eliminate the glitch. But, my clients want interlaced quicktimes, so I need to figure out why this is happening.
Any other thoughts?
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[Alisa Placas] “I just tried rendering it with no fields and that did eliminate the glitch. But, my clients want interlaced quicktimes, so I need to figure out why this is happening.”
that’s very interesting…. a problem rendering to fields with 3d lights.
i don’t know why that would be a problem, nor do i know how to fix it, but i do have a workaround…
place your final comp into a new comp, same size and all, but set the frame rate to 59.94 fps (i assumed your other comps are 29.97, if you are working in pal, set to 50 fps). if you have any interlaced footage in the comps, you will want to make sure that ae is set to separate fields (select footage in project window then chose files>interpret footage>main…).
now just render that 59.94 (or 50 fps) comp as progressive. hopefully, since it is not rendering to fields, the light problem will not be in the render. if it works, just import the render back into ae, drag it onto the make comp icon and render that out with fields and make sure the render setting’s frame rate is 29.97. it’s not an efficient way to work, but it should get you through this.
i think you should also post this in adobe’s ae forum when you get a chance… this sounds like it is a bug in cs3.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
Thanks for the advice!
I’ll try your ‘fix’ and also post to adobe.
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