# Changing calibration target in Eyelink

**URL:** <https://psychtoolbox.discourse.group/t/changing-calibration-target-in-eyelink/2020>\
**Category:** Uncategorized\
**Created:** [October 19, 2011, 12:27pm UTC](https://psychtoolbox.discourse.group/t/changing-calibration-target-in-eyelink/2020 "2011-10-19T12:27:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![zaleatoire](https://avatars.discourse-cdn.com/v4/letter/z/b3f665/32.png) [@zaleatoire](https://psychtoolbox.discourse.group/u/zaleatoire)\
**Post date:** [October 19, 2011, 12:27pm UTC](https://psychtoolbox.discourse.group/t/changing-calibration-target-in-eyelink/2020/1 "2011-10-19T12:27:19Z")

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Hi there,  
  
I am presently programming an experiment designed for babies and would need to change the traditional dot calibration routine. What I want is to change the dot into an animated image and display a sound at the same time. I want also to be able to manipulate the number of time the animation will be displayed.  
I found how to display a different image in PsychEyelinkDispatchCallback in EyelinkDrawCalibrationTarget. It works, no problem. The problem come when I want to display a video instead of an image for each target: it crashes. I guess something else has to be modified but I dont know where to start... Does anyone had the same problem ? Or did its own calibration routine ?  
  
Well, I would be happy to read any suggestion,  
  
Regards,  
  
Isabelle