If you are recording using a phone, iPad (tablet), or other device ( i.e. digital camera), then you have the benefit of setting one of these devices in more mobile places than a webcam.
How to do I reduce shaky footage?
Set up your camera on a tripod to eliminate shakiness. Unless you are moving your camera, then use your hands with multiple points of contact (brace your elbow to your chest) to minimize the natural shaking of your body.
Can I customize the settings?
Most mobile devices will have customizable camera settings, but the defaults are usually sufficient.
Here are links on how to change your video resolution settings for iOS and Android cameras.