3 Replies Latest reply on Feb 17, 2017 6:47 AM by Rick Gerard

    Previewing clip with effects nearly non-functional on iMac

    bunger

      Attempting to run trial version of AE 2017 on a 2012 iMac:

      i5 2.9Ghz quad core

      32GB ram ddr3 at 1600MHz

      1TB Samsung Evo 850 drive nvidia

      GTX 675mx video

      Running MacOS Sierra

       

      Throw a clip in, drop a denoise filter on it, and then try to preview. It drops to about 1 frame per second and is nearly unusable.

       

      I've installed the latest CUDO drivers.

       

      Any suggestions would be very much appreciated!

        • 1. Re: Previewing clip with effects nearly non-functional on iMac
          Dave LaRonde Level 6

          Denoise takes FOREVER to process.  Are you doing a proper preview or are you thinking to yourself, "I know how this AE works!  I'll just hit the space bar!"

           

          Wrong.  Hit zero on the numeric keypad.  And wait.  This is AE.  Not a video editor.

          • 2. Re: Previewing clip with effects nearly non-functional on iMac
            bunger Level 1

            Tried both methods - space bar and zero and it just crawls.

            • 3. Re: Previewing clip with effects nearly non-functional on iMac
              Rick Gerard Adobe Community Professional & MVP

              I've installed the latest CUDO drivers.

              This makes me nervous - Do you have a compatible NVIDIA GPU? If not uninstall the drivers right now.

               

              Are you new to AE? A ram preview has to render. The speed of the render depends on the Composition Panel resolution. If it is set to Full and you are working with HD footage (1920 X 1080 @ 29.96 fps) it can easily take several seconds a frame to render the preview. Once the preview is rendered the comp should playback at full speed. If your comp is 60fps it will take at least twice as long to render at Full resolution. If it is 4K it will take at least 4 times longer to render.

               

              The best option, especially if you are working on a HR display, is to set Composition resolution to Auto and set the Magnification ratio to 50% for previews. Denoise is hard to judge at less than Full resolution and 100% (200% for HR displays) so the fastest thing to do is to pick a real noisy part of the frame and preview using Region of Interest. If that looks OK then close the region of interest and the render a suitable DI (digital intermediate using a suitable production codec - NOT h.264 or any other delivery format) for use in the rest of your production. Because Denoise is so slow to render it does not make much sense to apply Denoise and then add a bunch of other effects and edits to the comp. Previews are so slow that it becomes nearly impossible to get anything done. Denoise>Render a DI>Import and replace usage in your project and go from there.