webcam recording

You could certainly do that - but you would need to use some other program to record the user's video responses.

It so happens that Oddcast (makers of SitePal) offers such a solution. We've had clients use it to implement online interactive interviews. Note that the solution is not inexpensive and would require you to implement non-trivial product integration work.

For more information about our video capture solution please see -
https://www.oddcast.com/dev/av_capture/

Hope this helps
Gil