[fredjacksonsan]

Questions: How many miles on your Jeep?

During the video, could you feel a jerkiness or resistance when turning the wheel and making the noise?

Can you turn the tire when 4wd is engaged? If so agree with a stripped gear.

Is the noise coming from the hub/wheel area or the differential area?

It definitely sounds like from your description that it lasts longer definitely indicates a failing part. It could even be a bearing; next time you drive somewhere, compare the temperatures of the front wheels. If the side making the noise is hotter, then that would point me toward the bearing.