Some USB video devices simply will present an on-screen dialog: "This Device Requires A USB 2.0 Port".
And unfortunately, Apple doesn't have a Webcam Preference Pane in OSX.The single best thing you can do that doesn't need any Mac webcam app at all is to improve your room lighting so the camera doesn't have to struggle under inadequate light.Apple intentionally does not allow external USB Mac webcams to be selected as a video source in i Move. Try a special hack from Mactaris that allows i Move to 'see' an external 3rd-party web camera.Otherwise you'll simply need to record your video with some other Quick Time compatible video capture app - then bring it into i Movie for editing.Start in your Apple Address Book: Family & friends with, say, @or @are good candidates for Apple Messages, i Chat, @for Yahoo Messenger, @or @for MSN Messenger buddies.
Or try a video session with Face Book friends online.
One Apple compatible webcam effects and image adustment solution is a app called i Glasses from
It also provides alot of webcam effects to play with.
Apple's built-in i Sight HD on the i Mac, Mac Book and Cinema Display line have horribly limited camera angles, so adding an external Mac webcam gives alot more flexibility.
Particularly for adult sex web conferencing you want and need moveable, adjustable cameras.
Sometimes just canceling one app's video call & switching works, sometimes you have to Quit competing video apps and relaunch.