5 Replies Latest reply on Sep 3, 2012 1:15 PM by Steve Grisetti

    focusing in on a specific moving area of a video

    Keylonta

      Hi,

       

      1. Is it possible to focus in on a specific moving area of a video?

       

      For example a ship sailing on the sea. Is it possible to mark an area around the ship, and have the marked area move with the ship while excluding the rest of the video so only the close up of the ship is visible at all times?

       

       

      2. Is it possible to stretch / speed-up video footage of a live band performance; to sync it with the audio of a studio recorded version of the song?

        • 1. Re: focusing in on a specific moving area of a video
          Steve Grisetti Adobe Community Professional

          Yes, there are a number of ways to highlight an area of a video. You can spotlight it. You can darken the rest of the video so that it's the only area clearly visible. You can even zoom into it to a certain extent (as much as the video's resolution allows).

           

          And, yes, using Time Stretch, you can precisely speed up or slow down your videos.

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          • 2. Re: focusing in on a specific moving area of a video
            Keylonta Level 1

            Hi Steve,

             

            I have a video performance of a live band that is taken from the front of the stage so that all the stage is visible in the video. The video is a bit shaky and it moves around a lot. I want to crop the video so that the floor of the stage is the bottom of the screen and crop the rest so the performers are all visible and take up the space of the entire screen. Like in the ship example I gave before, is it possible to select the area that I want and crop the rest of the video? Will it compensate for the shaky film and the fact that the position of the stage is constantly moving because of the the camera moving around and zooming in slightly here and there?

            • 3. Re: focusing in on a specific moving area of a video
              the_wine_snob Level 9

              For #1, this article will discuss some methods of Highlighting a Moving Object: http://forums.adobe.com/thread/390834?tstart=0

               

              Steve has mentioned Time Stretch, and that is my rec. too. Note: Video is only divisible by 1 Frame increments, so if your FPS is 29.97, then the smallest adjustment will be 1/29.97th of a sec. However, with the human eye/ear, that is enough.

               

              Good luck,

               

              Hunt

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              • 4. Re: focusing in on a specific moving area of a video
                the_wine_snob Level 9

                For the "cropping," there are at least two ways to do this easily, though with different visual results:

                 

                1. Apply the Crop Effect to the necessary sides of the Source Footage Clip, but this will leave black bars around the edges of the Video's frame.
                2. Adjust the Source Footage Clip's Fixed Effects>Motion>Scale (to Zoom), and Motion>Positin (to Pan to where you wish), and let the Project's Frame Size effectively crop the area, that extends beyond it. The possible limitation with this method is that if one Scales too much, the image will degrade in quality, but a little will most likely never be noticed.

                 

                Both methods allow one to Keyframe the Effects over time, which might be desired.

                 

                Good luck,

                 

                Hunt

                • 5. Re: focusing in on a specific moving area of a video
                  Steve Grisetti Adobe Community Professional

                  Reducing shakiness in your video is easier than that.

                   

                  The Stabilizer effect does what you describe automatically for you.

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