A metallic rattling noise occurs when car is moving in gear and out of gear, but doesn't happen at a stop/at idle - hence, appearing to be a drivetrain issue. It went away for a few minutes when I hit a bump in the road (weird?) but then it came back. It appears to be coming from under the car, at or behind the seats.

This issue started on a 25 minute drive home tonight. It happened for about 10 minutes, stopped for 10 minutes, and then came back for the last 5 minutes.

Could it be a CV joint or a bearing problem?

I have a quick video too. Hopefully you can hear the noise despite my voice.
https://www.youtube.com/watch?v=tVhX...ature=youtu.be

Any help would be appreciated!