1 Reply Latest reply on Nov 17, 2010 4:04 AM by dradeke

    Color consistency between project input and output video

    JeffVar

      I'm using Premiere to create a test/calibration video for use in some of our infrastructure and came across an issue I haven't been able to solve.

       

      I feed in some known color cards (PNGs of known solid colors), hold them on the screen for a few seconds, then switch to the next.  I rendered my video with the following video settings:

       

      Codec: Windows Media Video 9

      Allow interlaced processing: false

      Encoding passes: Two

      Bitrate mode: Constant

      Frame width: 640px

      Frame height: 480px

      Frame rate: 30fps

      Pixel Aspect Ratio: Square (1.0)

      Render at maximum depth: true

       

      Maximum bitrate: 2,048 kbps

      Image quality: 100

       

      Decoder complexity: Auto

      Keyframe interval: 5 seconds

       

      The problem becomes that in the output video, some colors like pure red (255,0,0) turn out really funky (236,27,36) whereas pure blue (0,0,255) renders perfect.  Magenta (255,0,255) turned out close but not exact (255,0,254).

       

      Am I missing a setting that is telling it to compress?  Surely telling WMV that I want 255,0,0 should be a simple request.

        • 1. Re: Color consistency between project input and output video
          dradeke Adobe Employee

          I'm not an expert by any means, but I've found color shifts when outputting to web friendly formats.  The media player itself may also be an issue.  For example, when I output h.264 via AME, I often can get slight shifts in output color as a result.  I don't normally find this problem, when I output to more robust, editing type codecs such as P2, XDCAM, etc.

           

          Also, Quicktime has known issues about gamma shifts, so if you happen to be playing via that, this could also be a part of your problem.

           

          Try outputting the same files as a P2 and see what it looks like.

           

          Hope this helps,

          Dennis