7 Replies Latest reply on Jul 9, 2015 3:18 AM by DickieBoy

    Text Tracking


      Morning All!!


      I have a piece of GoPro footage where the camera is attached to a box that moves along a conveyor belt. What is the best to way to have text move towards the camera to match the pace of the movement along the conveyor belt?


      Thanks in advance,

        • 1. Re: Text Tracking
          Mylenium Most Valuable Participant

          Simply hand keyframe it. These types of shots are pretty much un-trackable in any software. At best you may be able to pick some fixed points e.g. in a background scaffolding and track them to at least derive a bit of basic rotation and position information, which might be useful to remove some shaking, but the actual scaling/ zooming will almost definitely require to be done by hand.



          • 2. Re: Text Tracking
            Rick Gerard Adobe Community Professional & MVP

            Not all shots will work with camera tracking but if your shot has enough fixed geometry to get a good camera track it is probably your only automated solution. You may have to roto remove the belt so it doesn't foul up the track. We can't give any better advice without seeing the shot.

            • 3. Re: Text Tracking
              DickieBoy Level 1

              Hi Rick,


              Here's a section of the footage.


              • 4. Re: Text Tracking
                Mathias Moehl Adobe Community Professional

                you could use planar tracking for this.

                Just track one of the rods that hold the roof part of the conveyor belt, for example.

                This will be quicker and more robust than a camera track.


                For details of such a workflow see

                MochaImport+ for AE Mini Tutorial 2: Move Layers | mamoworld


                • 5. Re: Text Tracking
                  Andrew Yoole MVP & Adobe Community Professional

                  Personally, I agree with Mylenium.  The speed of the conveyor is fairly constant, so I'd just manually keyframe it.  There's plenty of reference points in the bracket-things.  You only have to get the speed right on one layer, then cut and paste to new layers and reposition in time. 

                  • 6. Re: Text Tracking
                    Rick Gerard Adobe Community Professional & MVP

                    That shot would camera track just fine if you corrected the shot for the lens distortion. This can be done with the GoPro app. Once the lens distortion is removed Camera tracking will work on the shot just fine. I tried it and everything  matched up.

                    Screen Shot 2015-07-08 at 6.36.39 AM.png

                    If you don't what to do that then I'd suggest that you just manually keyframe scale on a 2D layer. It should be just fine. You could even use AE's original tracker to track scale rotation and position and apply that track to a null. I also tried that and it worked just fine.

                    • 7. Re: Text Tracking
                      DickieBoy Level 1

                      Thanks for everyone's input, all your assistance is much appreciated.