i was filming the sky, trying to imagine there was a bird there. the kid had hidden in the stroller next to the mother. when the camera pans down and i start running, the father comes back, picks up the baby in the stroller, brings him back where the eagle would have dropped it. >> orange balls are strategically placed on the ground to use as reference points during the 3-d animation process. >> these are our trackers, which you can see, you can use anything that contrast with the background, so that the software can allow the position of every tracker and replicate them in the camera. >> next comes the complex problem of creating the three dimensional elements. the first step is modeling the eagle and his prey. >> my part of the project was to create the model of the baby. here you can see i got my reference, i used it as a guide to a proportion of the baby. it didn't have to be exactly