1 Reply Latest reply on Jan 16, 2013 1:55 PM by Rick Gerard

    Grainy Preview


      Hey all,


      I have a decent understanding of after effects but mainly use it to create timelapse. Over the past 6 months I have probably put through over 200 timelapse sequences so I'm kind of stumped as to why I'm having this problem all of a sudden. I have a raw image sequence that I am trying to bring in and the preview is extremely grainy. It almost looks like the grain of the image(I did shoot at 800 iso) is being amplified quite a bit. Not sure why this is happening but some brief research led me to believe it might be an opencl issue with my laptop.  The cr2, rendered jpegs from lightroom, and final video seem to be ok but if I want to denoise any of my footage in after effects I have no idea of knowing how much to put on there and would like to rectify for future projects.

      Screen Shot 2013-01-16 at 11.13.04 AM.png


      Hardware Overview:


        Model Name:    MacBook Pro

        Model Identifier:    MacBookPro8,3

        Processor Name:    Intel Core i7

        Processor Speed:    2.5 GHz

        Number of Processors:    1

        Total Number of Cores:    4

        L2 Cache (per Core):    256 KB

        L3 Cache:    8 MB

        Memory:    16 GB



      AMD Radeon HD 6770M:



      I have tried importing as 32 bit, and a few other things but I've never really seen this before. Even when the ACR screen comes up on import it all looks dandy so I'm not sure what could be going on.

        • 1. Re: Grainy Preview
          Rick Gerard Adobe Community Professional & MVP

          I noticed that you have not scaled your images to a standard size. Your comp is 5000 + pixels wide. Way too big for final delivery unless you're going for Imax projectors.


          I'd do that in Photoshop with batch processing features before I did much elce. You'll get much better resizing outside AE than inside.


          As far as grain reduction goes it's all a matter of taste. Grain reduction is not fast rendering so, again, you are going to be much better off if you size your image sequences so that at some point in your final project the images are somewhere close to 100% scale. It's also very important to judge any grain or noise reduction while viewing your comp at 100% scale and best quality.