it is possible to make a video of an interview....but it is not clear (to me) how long you can record a single video. I've never tried more than 5 or 6 minutes. I know that camersa have to stop at 29 minutes else there is some issue with being a camcorder. Also, you have finite memory on an iPad mini...so what happens when you run out of memory? Another issue is that if you keep the screen running constantly the battery will drain quicker, so you will need to keep the brightness down. And if you have low-light situations, then the image quality will suffer.