RAM Preview Problems in After Effects CC

AE CS 6 RAM Previews work, but two problems to report with AE CC on the same computer. Possibly two faces of the same problem.
1. Having QuickTime Player open while doing a RAM preview makes the RAM preview stutter. I quit the player, and now the RAM preview plays back without dropping a frame, though Info palate shows "fps: 24 (realtime)", but the RAM preview playback is slow: ie, a tenor sounds like a baritone.
2. A RAM preview that looked and sounded fine last night, is now playing back slowly (tenor sounds like a baritone), though Info Palate shows "fps: 24 (realtime)". I have no other applications open. The only thing that changed is that I quit AE, slept the computer, slept a little myself, and then launched AE. Trashing the cache files (manually), rebooting, relaunching and re-RAM-previewing creates a functional RAM preview, so I assume there is some problem with the cached files or the retrieval of them.
Is anyone else getting either of these? If so, what is your system configuration?
Also, I posted on another thread that Quicktime import/render works with AE CS6 on this computer, but AE CC can not import, play, or render QT reliably (without throwing error messages). Perhaps all of this is part of the same problem.
Thoughts?
Cheers,
Benjamin
CS 6 CC | Mac OS 10.8.4 | MacPro5,1 | 96 GB Ram | PROJECT & MEDIA drive: Mercury Accelsior > 500 MB/s read/write | CACHE drive: Mercury Accelsior > 500 MB/s read/write | Nvidia Quadro 4000 Mac | CUDA Driver: latest update | Wacom Intuos 5

96 GB RAM is accessible in 10.8.4 on my machine according to OWC. I'm working on a stereoscopic 4K project with large files and hundreds of layers. I regurlarly render with AE MP while working with huge files in PS, and am glad to see the % of RAM AE uses displayed in my render cue between 3 and 60%.
I have 12 processors (24 with hyperthreading)
I have reserved 10 for other applications leaving 14 for After Effects
4 GB per x 14 = 56 GB for AE. leaving 40 GB for everything else
I've played with what and how much I have allocated being sure to keep the CPU counts even, but this does not fix the RAM preview problems described above. Any other suggestions?
Thanks,
Benjamin

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Why is RAM preview crashing my After Effects CC 2014?

Using Windows 7 x64
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Until my current project started getting more complicated all was good - no crashes. As I've added more assets to it, it's become very unstable.
When I click the RAM Preview button it'll either crash immediately, or succeed. If it actually starts, it's fine. But more often than not it just crashes the whole program immediately.
How do I solve this?
Is there a checklist I can use to check for possible issues?

Right, right. Vague info I know, but I was hoping for a checklist of common culprits I could eliminate one by one. Very new to the world of video.
I'm running:
Windows 7 x64
Intel i7-3770K CPU @ 3.5GHz
32GB RAM
GeForce GTX 780
Doing a 720p project, but using mainly 1080p footage.
Video files used are .MP4 and .MTS format.
Using various effects. Mostly simple stuff.
Plenty of sound effects and music as well. All .WAV format. No MP3's (I heard AE hates MP3 format).
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I got render and RAM preview problems. help?

i got render and RAM preview problems with after effects! please help me
when i started on a project earlier today the RAM preview was failing and it stoped making a preview after about a second, when i hit the RAM preview buttom again it continued to load and stoped again after a half second, and it continued to do that till it wasn't loading at all, just playing the same thing up even doe it haden't loaded the whole composition! BUT if i moved the (thing you see where you are on the timeline in need of a better name) it started loading a little more and then it stoped again.. so after alot of problems and moving i managed to make a RAM preview of the whole composition..
now the real problem: when i was done with my project and i was going to reender i did like this: i added my composition to the render queue, chosed my render settings and started to render, after exactly 37 frames it stoped and no window or anything poped up, the only thing that was telling me something was wrong was the render status, and it said: ''failed at 0;00;00;37'' that's not even a second! and BTW when i render after effects only uses 12% of my 6GB RAM memory.. i dont know what to do! i've tried other render settings but the same thing happens! can anyone help me?
BTW i'm swedish and only 14 so i might misspelled something..

Start here and make sure that you understand how RAM preview is supposed to work first:
http://forums.adobe.com/thread/424030
What version of After Effects? Have you installed the recent updates? What operating system? What kind(s) of source footage? Has this ever worked before? What other software are you running? Do you have any third-party effects or codecs installed? Are you rendering with OpenGL?
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Ive been having a repeated problem with after effects crashing when I try to render a sequence.
The render halts then first After Effects becomes unresponsive then every other applications follows and I have to hard-restart my machine.
Can anyone help me find out how to stop this happening?

i - Illl try to answer these bellow...
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I had a similar problem two days ago, i thought it could be a problem with some animated png sequences and a "matte feather" effect so i replaced the sequences with non animated versions and it seemed to fix the problem.
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Model Name: Mac Pro
Model Identifier: MacPro6,1
Processor Name: 6-Core Intel Xeon E5
Processor Speed: 3.5 GHz
Number of Processors: 1
Total Number of Cores: 6
L2 Cache (per Core): 256 KB
L3 Cache: 12 MB
Memory: 32 GB
Boot ROM Version: MP61.0116.B07
SMC Version (system): 2.20f18
Illumination Version: 1.4a6
Serial Number (system): F5KM804VF694
Hardware UUID: A50DAB15-0502-5AAB-85A9-4F1B1B6DD9C1
AMD FirePro D500:
Chipset Model: AMD FirePro D500
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 3072 MB
Vendor: ATI (0x1002)
Device ID: 0x679e
Revision ID: 0x0000
ROM Revision: 113-C3861J-687
gMux Version: 4.0.11 [3.2.8]
EFI Driver Version: 01.00.687
Displays:
DELL UP2414Q:
Resolution: 3008 x 1692 @ 30 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: WWRHC42G085L
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort
Television: Yes
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Not sure how to find out about CUDA or what it is?
Do you have any third-party I/O hardware (e.g., AJA, Matrox, Blackmagic, MOTU)?
No
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Apple Prores4444 and some png sequences
Do you have QuickTime installed. (You should.) If so, what version? The answer should be specific, such as "QuickTime 7.6.2".
Quick Time player 10.4
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I have Video Copilot optical flares (though I've tried switching this off.)
Are you using OpenGL features in After Effects?
Im not sure?
Does the problem only happen with your final output, RAM preview, or both?
Doesn't appear to hang on RAM preview
Are you using Render Multiple Frames Simultaneously multiprocessing?
Yes
Are you using the ray-traced 3D renderer?
No
If the problem is with output, give your exact output settings (both render setting and output module settings). Screenshots help.
Best Settings - Outputting as Apple Pro Res 4444
Hope this is helpful,
thanks,
Jonathan

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I recently bought a new rig
i7 4790K running at stock
8gb 1866mhz corsair vengeance pro ram 2x4gb
EVGA GTX 770 2gb superclocked
WD Black 1TB 7200rpm
Samsung 840 Pro 128gb
Asus Z97-PRO motherboard
I run AE and open a file and import my clip (59.94fps) and add twixtor and then hit ram preview to see if all is good and it either takes a little bit longer than it should
or it would say "Rendering frame switching to foreground" When this happens all seems ok but after the preview I can not scroll through the timeline without lag and pixelation again like as if I havnt hit the ram preview. So it would have the green bar above the clips showing for the ram preview but once the preview is over I can scroll through the timeline for a second then the green bar goes away. I know that the pixelation is due to adaptive resolution
but I have tried changing that to "fast draft" and the pixelation stops but still struggle to view in timeline. I have the preview resolution set to third or quarter.
I thought that getting higher clocked ram would solve the problem atleast a little more. But not to much. So my main question is what am I doing wrong? Or how can I correctly setup AE or my computer to handle this?
The main clip is actually 200fps but I go to File>Interperate footage>Main>Conform to framerate
Changing it from 200fps to 59.94.
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Thank you to anyone that helps so much!

Well, for starters, turn off MP rendering. That warning during RAM previews is a clear indication that you are using it and well, with just 8GB RAM it doesn't exactly make sense. The rest is too vague since you haven't provided any proper details about your source file, but suffice it to say that temporal mangling of any kind can have weird effects, even more so if your source files are compressed. Therefore the pertinent thing to do first would be to convert your file to an uncompressed intermediate format, including conforming it to your target framerate. In addition you may simply consider not using any fast previews or the disk cache at all. It is known to be flaky with temporal plug-ins. set your comp to Final quality to enforce software mode rendering.
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"We are aware of one issue regarding RAM preview in After Effects on Mac OSX v10.10: When a RAM preview begins to play, the first several frames of the video will not play the first time through; subsequent loops through the same RAM preview duration will play all frames."
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paulo freitas wrote:
"We are aware of one issue regarding RAM preview in After Effects on Mac OSX v10.10: When a RAM preview begins to play, the first several frames of the video will not play the first time through; subsequent loops through the same RAM preview duration will play all frames."
when will it be repaired? in the next update?
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I posted a question about this yesterday but I thought I would repost it with more detail!
I have a restless issue here with rendering and RAM preview. I am simply trying to create a viral ad which uses the cloning effect I achieved with masking for my college coursework and I have completed the process of creation but I have ran into problems. The RAM preview will only play up to a certain point then it will just stop and this effects the final render because it gets to the point in the rendering where the RAM preview stops and then a message will pop up saying the rendering has failed or something? (Screenshots Below)
I have tried RAM previewing just one of the three videos I am using and it still stops at the same point.
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With just 2GB of RAM, I'm impressed that you can generate that much of a RAM preview. RAM previews use RAM. When they run out, they stop.
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Multiple problems installing After Effects 12.2.1.5 trail on os x 10.9.3

iMac 3.4 GHz Intel Core i7 - 16 GB 1333 MHz DDR3
I downloaded the CC app and then downloaded After Effects 12.2
Installed the 12.2.1.5 update.
I feel that all my issues are interrelated so I'm posting them together.
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Instead of hunting down solutions for each problem I feel there is one solution to them all.
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HELP!!

Okami Itto wrote:
My hunch is there is a permissions problem that stops After Effects from installing and working properly.
HELP!!
And there have been a number of threads about it. You may have a couple of different issues occurring and I've seen some good threads on both.
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Hi,
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Thanks for the replies!
I was so sure it wasn't because the amount of apps running in the background, since crashes and the "after-crash-problems" didn't happen all the time. The computer is my employer's, and I think it was built with 64 bit Windows 7 in mind. For a reason I don't know they decided to go with XP after all, which is kind of weird since there actually is 6 GB RAM inside, but XP can use only half of that amount. Now I guess I just have to start harassing my boss to buy me a 64 bit Win 7.
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RAM Preview Problems in After Effects CC

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