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CS4 ram preview disappears without any changes being made
I have foolishly updated After Effects CS4 to 9.0.2 and I have run into a weird problem. It concerns ram preview and keeping it from disappearing.
So I do a normal ram preview after selecting an area of the timeline. I watch it back and it plays fine no dropped frames or anything. Then I hit the space bar and sometimes the green ram bar just disappears or it stays until I move the time marker outside the region of interest at which point the bar disappears and I have to re render. This is with no changes to the project at all. I have adaptive resolution on rather than OGL as OGL can’t use multi processing for ram previews. However if I do turn OGL on then the green bar stays even if I go outside the markers. It’s truly weird and obviously a bug but I was wondering if anyone else has seen this.
I am running the latest version of AE CS4 9.0.2.24 on Mac OSX Leopard 10.5.7. I have a Blackmagic intensity card but have taken this out of the equation by not previewing with it. This was not happening before I upgraded AE I am pretty certain, and I thought it was pretty snappy.
If I were to uninstall it and then do a re-install do I need to deactivate it first or will the uninstaller do this for me?
all the best
richard
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8 Replies
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Not footage unfortunately as this happens with a simple shape on a color background, or with text. No effects either. Basically it’s the multi processing eating into the ram preview immediately.
I have tested without MP on and it works fine but that sort of defeats the whole idea. What are the optimum settings for MP and ram preview?
Richard
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Hi !
I just found how to fix the bug (partially), but it’s under windows… so maybe it could works for you maybe not….You can try to uncheck the option “Hardware accelerate Commposition, layer, and footage panels” in the display tab of AE preferences.
hope it works for you 🙂
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Hey Sebastien,
I just recently turned on this setting in my preferences. And I noticed the exact same problem happening to me. Quite randomly, so I can’t say for sure that this will fix it. But I’ve now turned it off again and we’ll see what happens. (I’m really not sure what hardware accelerating these panels is good for, never noticed any change).
I’m on OS X, but this will probably not be OS related.
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Has anyone solved this?
I just upgraded from CS3 to CS4 and now my ram previews are vanishing at the drop of the hat. Something as simple as scrubbing the timeline, which I often like to do with ram previewed footage is causing the preview to completely disappear. Its driving me crazy. I’ve tried adjusting the memory, multiprocessing, disk cache, hardware acceleration settings to no avail.
I’m on a 8 core mac pro with 16Gig ram. AE 9.0.2
Thanks,
-Matt
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There is some DVCPro HD footage. It worked fine in CS3.
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Hi Dave,
I thought that by replying to this post that it would get moved to the front of the cow forums, but it doesn’t look like that happened. I assume you replied because you were subscribed. Should I make a new thread about this?
I didn’t want to create a new thread when it looked like there was already a relevant one.
-Matt
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Done.
Thanks,
-Matt
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Just came across this old post, as I was having the same issue – RAM previews (and the green line) would disappear the second I did anything – and I found the source of the problem…
Eventually realised that AE was RAM previewing at full quality, even though I had it set at ‘Quarter’ in the Composition window. However, in the Preview pane, Resolution was set at ‘Full’. So when I rendered, it would render at full quality, but as soon as I did anything, it would default back to the project-wide setting, and the previews would appear to vanish. If I change the Composition window setting to Full, the preview reappear, and if I set the Preview pane setting to ‘Auto’, all is well ☺
Hope that helps anyone else who experiences this hiccup!
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