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After effects can not play full scenes

New Here ,
Aug 21, 2017 Aug 21, 2017

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When I ever I put new clips or scenes in after effects It can not make it all the way through. Sometimes even with a 15 second clip. Right now I am working with 4k footage 3 min 30 second scene.

It will only play/render to where the green line stops. I circled it. Then it goes back to the beginning. the more times I add stuff and try to play it the shorter the playback gets. When I start the computer over (off then on) It plays the first partial length. I have cleaned the cache. Started the computer over. and nothing helps.

Version  10.11.6 (15G1611)

iMac (Retina 5K, 27-inch, Late 2015

processor: 3.3 GHz Intel Core i5

Memory : 16 GB 1867 MHz DDR3

Graphics :AMD Radeon R9 M395X 4096 MB

Does this sound right?Screen Shot 2017-08-21 at 2.11.41 PM.png

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correct answers 1 Correct answer

Community Expert , Aug 21, 2017 Aug 21, 2017

Sid:

Yes, there is no difference as far as AE is concerned.  Unlike a video editing application where there's a compression setting associated with each Sequence, there's no compression setting associated with a Composition.  So, 3840x2160 at Full resolution is 31.6 MB per 8 bits per channel frame.  Your layers could consist of all GIF files and MB/sec. isn't going to change.

If you change your Comp Resolution to Half, Third, Quarter or lower (Custom) you might get the full length of your Comp to

...

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Advisor ,
Aug 21, 2017 Aug 21, 2017

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Normal behaviour. The length of time Ae will preview depends on the amount of RAM available in your system. Larger frame sizes, multiple layers and effects will each add to the RAM requirement - and therefore shorten the preview time. Use the work area bar to preview specific parts of your animation.

See:

Preview without rendering in After Effects

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New Here ,
Aug 21, 2017 Aug 21, 2017

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So there is no difference between 3 minutes of 4k RAW footage and 30 seconds of pro res 422?

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New Here ,
Aug 21, 2017 Aug 21, 2017

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16 gigs of ram and my video card can not handle 3 minutes of 4k footage at quarter quality playback off a

LaCie Rugged Thunderbolt USB 3.0 - 2TB Portable Hard Drive?   

Cut paste made the letters big. ANyway ...that is what you are saying? Also a 30 second pro res422 clip has the same issues on occasion.

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Advisor ,
Aug 21, 2017 Aug 21, 2017

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Ae works in a totally different way to NLE software such as Premiere Pro. Ae renders each frame to RAM to preview it. A 4k frame is approx 24MB. running at 30 fps therefore equates to a base ram requirement of around 720MB per second. Subtract the memory for your OS operation, for the running of the application itself; add additional layers, effects  etc... and 16GB doesn't go very far with 4K.

The speed of your drive and the memory in your video card is irrelevant in this case.

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Community Expert ,
Aug 21, 2017 Aug 21, 2017

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Sid:

Yes, there is no difference as far as AE is concerned.  Unlike a video editing application where there's a compression setting associated with each Sequence, there's no compression setting associated with a Composition.  So, 3840x2160 at Full resolution is 31.6 MB per 8 bits per channel frame.  Your layers could consist of all GIF files and MB/sec. isn't going to change.

If you change your Comp Resolution to Half, Third, Quarter or lower (Custom) you might get the full length of your Comp to preview.

Some things I do for previewing longer Comps:

  • Render a low-resolution movie file.  I like to use 1280x720 Apple ProRes 422 (LT) movies when rendering from AE and the "Apple TV, iPad, iPhone 4 and newer - 960x540" H264 Preset in Media Encoder if I want to keep working in AE.
  • Import the Comp into a Premiere Pro Sequence.  This will allow you to render a PR Video Preview which, unlike AE, will play all the way through.

-Warren

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Community Beginner ,
Jul 26, 2021 Jul 26, 2021

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You my friend are answering a totally different question. What does what you said have to do with anything the guy asked? what is this crap?

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Community Beginner ,
Jul 26, 2021 Jul 26, 2021

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New Here ,
Sep 07, 2023 Sep 07, 2023

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This is what I needed! Thank you!!

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New Here ,
Aug 04, 2021 Aug 04, 2021

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hi, 

that's your picture same me. 
Windows 10 GHz 2.9 Intel Core i7 

Memory: Ram 8GB DDR3 

 

it's still not work time short
I have clean and the disk cache but still not work. 
how to fix ? Please help me! 
Thank you 

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