The best YouTube format is 720p MP4 H.264 video codec, ACC audio codec.
Quote: "just move around while recording"
What you want to do is key frame animation for camera movement and it's easy to set up. All you do is set up two or more points for the camera at specific times (position/orientation etc...) and translate (linear/bezier etc) between them. If you've never done something like this, it's kind of advanced stuff but something that should be looked into if you want full control over camera movement.
Even easier than that is to do pathfollowing between waypoints or splines and unlock camera rotation. So basically it's like the cameras moving along a track but you can still rotate it.