5 Replies Latest reply on Feb 28, 2008 9:02 AM by (Donald_Ennis)

    Rotoscoping

      Hello. This my first attempt at rotoscoping and I have just finished my last frame. I came to find out that my original clip and my mask clip are not lined up with each other. the original clip is higher than the copied in the monitor. They play together in sync but I have two images instead of one. When I was creating the mask I had to blow up to 400% and use hand tool to move subject. I assumed that both clips were in sync or locked together but at some point in time they must have become unlocked, moved and relocked. If I could figure out how to realign them again I would be OK. Any assistance would be appreciated.

      Thanks,
      Don
        • 1. Re: Rotoscoping
          Joey Morelli Level 1
          Ah...the pain of Rotoscoping. Welcome to it.

          Select both clips in the timeline and hit "P" (Position). These numbers should match. If they don't, change the numbers on the masked clip to that of your main clip.

          Joey
          • 2. Re: Rotoscoping
            Jonas Hummelstrand Level 2
            To lock a layer, choose it and hit P on the keyboard. Hold down the Alt / Option key and click the stopwatch to apply an expression that will keep the layer at a fixed position. Look at what the layer's current position is and enter the same thing inside brackets, like this:

            i [512,288]

            Click outside the layer to apply the expression and that layer won't be able to moved again.

            - Jonas Hummelstrand
            http://generalspecialist.com/
            • 3. Re: Rotoscoping
              Level 1
              Wow!.. That was exactly what I needed. Thanks so much. I did figure how to use the pointer and select the different clips and align them up that way. This was OK but not perfect. I got to remember these short cuts. I ran into another problem when I imported my finished clip to Premiere. I exported my clip from AE as an avi. Plays well in media player and Power DVD. When I play the clip in AP I get double images as the clip progresses. The first few frames look fine and then I get double images or ghosts. I'll keep working with it but if you have any thoughts or ideas please let me know.
              Thanks again,
              Don
              • 4. Re: Rotoscoping
                Jonas Hummelstrand Level 2
                Sounds like interlacing. Make sure that you interpret the footage correctly in Premiere Pro.

                - Jonas Hummelstrand
                http://generalspecialist.com/
                • 5. Re: Rotoscoping
                  Level 1
                  OK, I figured it out. It occurred to me that my computer had been on for several days so I turned it off and let it set for a while. Later I turned it back on and everything loaded and played just fine. Thanks for replys and help.

                  Don