Videos with Webcams?
go to contral panel and it should show an icon for the web cam and click it then go to its menu and find a video record and ther if you still can't get it bring it to your dealer and ask them.
Do webcams come with headphones?
It depends what webcam you are buying. Most come with an ear-piece which has a microphone attached on to it.
Captures videos in QVGA or VGA resolution with sound i want to buy a camera that records videos with sounds would this work?
VGA means a resolution of x = 640 to y = 480 pixel on displays/screens.A quarter of the VGA's resolution is called QVGA (Quarter VGA, 320x240 pixel).
Can i convert avi videos in high mp4 videos with only my mibile?
Probably not - but since we don't know which mobile you are using, there is no way to know for sure.