2 Replies Latest reply on Jul 3, 2014 11:19 PM by Mark Linthicum

    ram preview is short?

    Mark Linthicum

      Why is Ram preview so short? i get maybe 2 min of preview time at 1/2 res 1092x1080 on a new Mac Pro with 32GB of Ram! It seems if AE is out of RAM it could render to the SSd or any hard drive and playback 30 min of footage but no i only get 2 min, anyone know if this camn be fixed? I have disk Cache enabled and set to 72GB, I thought this was suppose to fix this?

       

      Thanks, Mark

        • 1. Re: ram preview is short?
          Rick Gerard Adobe Community Professional & MVP

          Depending on your free ram that sounds about right. Disk cache will help if set up properly. We don't know anything about your AE version down to the decimal point or your OS, or your memory settings or cache settings. We also don't know anything about the comp. A ram preview of a comp that is using a bunch of particles and a bunch of video sources that require a ton of CPU work to decode is going to eat up resources faster than a simple text animation.

          • 2. Re: ram preview is short?
            Mark Linthicum Level 1

            Hi Rick,

             

            This has been an issue since I cam remember, CS4 possibly earlier, i am using the latest CC now and on a new Mac Pro i don't see why this is still a limitation.

            Mentioned above I have disk Cache enabled and set to 72GB, Caching on the 1TB internal Mac Pro SSD. If I render out the clip full res it only uses 6GB of space and I have the comp set to 1/2 res. It is a simple panning background made up of about 20 PS layers, very simple, I don't know why that would make a difference, isn't Ram preview just rendering the frames out to ram? If there is movement it renders a new frame right? and there is movement in every frame. CPU is not my issue, it is the length of the timeline Ram preview will render (not how long it takes). Why can it Ram preview 30 min of footage if needed to my SSD and play it back? It seems like it would be  simple!

             

            Thanks, Mark