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Keylight out of memory / Can't read MooV

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Jürgen HacklKeylight out of memory / Can't read MooV
by on Nov 17, 2010 at 8:34:33 am

OK, just got the new MacPro (12core, 48GB RAM) ... but I can't use multiprocessing because of two strange errors:

I think many of you know the "keylight out of memory" error. I can avoid it by deactivating the "layers cache" (I don't know what that is in the english version) every 10 frames. But could anyone tell me the reason of this bug. I have allocated 3 GB RAM to each render thread, really!

By the way, why is it not possible to allocate more than 3 GB to one render thread?

The second, bigger problem is that AE sometimes can't read the footage I'm working with (it's the strange "can't file open ... damaged or unsupported .MooV" bug). The footage is XDCAM EX (35Mbit VBR) transferred with "XDCAM Transfer". But it happens not all the time, just sometimes when working in the timeline, or after a couple of minutes rendering. The strange thing: if I deactivate multiprocessing, all works fine (at least till now) ... but it's no way to have that 12core monster and only use one thread.


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Dave LaRondeRe: Keylight out of memory / Can't read MooV
by on Nov 17, 2010 at 3:41:20 pm

Since you have a shiny, new machine, may we assume that you also have AE 10 plus the free update to AE 10.0.1, which solves much annoying AE weirdness? If you don't have the update, you should get it.

You may also benefit from this blog about memory allocation:

If you're still running AE 9, there's also an update to it as well; I think it's 9.0.3, which you should also have. But if you do run AE 9, you should know that long-gop codecs like that used in XDCam do not work well in AE versions prior to version 10 (aka CS5). Here's what's up with that:

Dave's Stock Answer #1:

If the footage you imported into AE is any kind of the following -- footage in an HDV acquisition codec, MPEG1, MPEG2, AVCHD, mp4, mts, m2t, H.261 or H.264 -- you need to convert it to a different codec.

These kinds of footage use temporal, or interframe compression. They have keyframes at regular intervals, containing complete frame information. However, the frames in between do NOT have complete information. Interframe codecs toss out duplicated information.

In order to maintain peak rendering efficiency, AE needs complete information for each and every frame. But because these kinds of footage contain only partial information, AE freaks out, resulting in a wide variety of problems.

I'm a Mac guy, so I like to convert to Quicktime movies in the Animation or PNG codecs; both are lossless. I'll use Apple's Compressor, Adobe Media Encoder or Quicktime Pro to do it.

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

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Jürgen HacklRe: Keylight out of memory / Can't read MooV
by on Nov 19, 2010 at 9:13:40 am


You were right. I converted the XDCAM footage to 8bit uncompressed, it takes 1.5 TB on the harddrive now, but everything works.

Thank you!

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