Hello,
I am running a survey where participants report their emotions after watching specific videos. I now would like to incorporate a slider bar, so that participants can report their emotions on a second-by-second basis WHILE watching the video. Is there a way I could incorporate such a slider in the survey?  
For example, is it possible to embed external programs a into Qualtrics?
For example, the following Matlab software provides a sliding bar like the one I need.
https://github.com/jmgirard/CARMA
 How difficult would it to integrate this into the survey?
Thanks you
Lorenzo