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andrecostabr2
Inspiring
June 29, 2016
Answered

RAM Preview – Not in real-time

  • June 29, 2016
  • 33 replies
  • 110276 views

Hello.

I'm having a hard time dealing with this new Preview in AE. A lot of times it is not giving me a real-time playback.

It is nice to have the preview continuously playing while making some changes on the comp, but sometimes I would like to have a real-time preview, like the old RAM preview.

Is it possible to generate a real-time RAM preview? I don't mind waiting for AE to render before playing back the animation.

I have tried the Numpad 0 and also spacebar. I've tried to purge all, restart machine, etc...

Thanks in advance.

Best,

Andre Arruda

After Effects 2015.3 (13.8.0.144)

Mac Pro (Late 2013)

3.5 GHz 6-Core Intel Xeon E5

64 GB 1866 MHz DDR3 ECC

    Correct answer andrecostabr2

    papanapa wrote:

    My monitor (Samsung 4k) is running on 30Hz, even though the Mac Pro and the monitor both support 60Hz. Could that be an issue?

    Possibly. Your scene description should DEFINITELY have no problem playing back in real time, so something is amiss and that would be the first thing I'd troubleshoot if I were in your position.


    Changing the monitor to 60Hz solved the problem here =]

    33 replies

    Show previous replies
    Zulkifar2
    Zulkifar2
    Participating Frequently
    July 14, 2016

    I have the same problem here. Video preview was weird. Now that I'm previewing with an audio track I can definitely say that the preview is not realtime. Sometimes it doubles the frame, sometimes goes slower or faster. The audio sounds distorted and jumpy.

    Szalam
    Community Expert
    SzalamCommunity Expert
    Community Expert
    July 14, 2016

    Zulkifar2 wrote:

    I have the same problem here. 

    Did you try any of the things I suggested? If so, which ones and what were the results?

    What exact version number of AE are you using?

    What version number of your OS?

    Please describe your computer hardware.

    ananggadipa
    ananggadipa
    Participating Frequently
    September 8, 2016

    Same here, I wonder when this would be fixed.

    I'm using iMac 5K Late 2015. Latest AE & Mac as right now. Upgrading to 32GB RAM from 8GB not helping though.

    Tried submit bug report but when I submit there's error messages.

      A
      andrecostabr2Author
      Inspiring
      June 29, 2016

      Szalam​ thanks for your reply.

      It seams to be a bug indeed. The checkbox "cache Before Playback" is checked.

      Putting the libraries panel under the timeline did help a lot but I'm still having some playback under real-time (27/28 out of 30fps).

      Thanks for ur help!

      U28D590 Display
      27.5-inch (3840 x 2160)

      AMD FirePro D700 6144 MB graphics

      Szalam
      Community Expert
      SzalamCommunity Expert
      Community Expert
      June 29, 2016

      So none of the other two suggestions worked, huh? Interesting.

      Please, please, please file a bug report and give them as much information as you can (including what you've tried and what worked). This is one of those really persistent bugs introduced by this new architecture that the Adobe people need more help squashing.

      Szalam
      Community Expert
      SzalamCommunity Expert
      Community Expert
      June 29, 2016

      Pull your Preview panel down so you can see all of the options. Switch the preview shortcut dropdown to the Num 0 option and check to make sure it has the Cache before playback option checked. That should make it behave similar to the old RAM preview.

      If you have a preview cached and it's not playing those cached frames back in real time, there's a bug.

      One thing to try.

      Make your timeline smaller. I'm assuming you're working on a 4K or 5K screen. Shrink your timeline panel vertically so it takes up a lot less screen space and try again.

      If that doesn't help, try pressing ` to make your comp window fill the screen and try it.

      If that doesn't help, try putting another panel (such as the libraries panel) underneath the timeline.

      Please let us know your results.

        C
        CreativeChef
        Participant
        February 22, 2018

        I only have to use After Effects once in a blue moon and just encountered this non-real time audio playback on a fully cached ram preview issue today.  (FWIW I'm on Mac 10.12.6 and AE CC 2018)  I spent quite some time Googling a solution and finally ran across the bit posted here about putting the libraries panel under the timeline.  That fixed it.  Wait. WHAT!?!?!  Are you kidding me that in 2018 After Effects cannot successfully perform a cache to ram and playback with audio in sync without the user having to do something as bizarre are rearranging the user interface?!?!? 

          S
          StephaneA_AfterEffects
          Known Participant
          February 22, 2018

          Indeed.  I spoke a tad too soon.  I now see that it takes a combination of the libraries panel and minimizing the timeline and neither is 100% reliable.  Absolutely ridiculous.


          The only thing that works 100% is to shrink the AE windows to above 60% of its full screen size and the Ram preview fps becomes sudenly real time all the time.

          Or you can tell it this way: to make AE work on a 4k monitor you have to shrink its size to a 2k monitor size... brillant.

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