Codenstuff.com

this screen recorder can save its recorded video to avi format

Looks Good so far...
But next Time i would Rate u to Add Alpha Channel to the Play Button ;)
It doesnt looks really cool with the White Background...

I don't find this UI really User Friendly, just imo..

like your calculator looks good except the UI, sorry dude and Napster is right if the play button had a transparent background it would look alot better

When I click capture, then click new and click capture again it causes an exception.
Also I get this exception when I try to record a file: System.Exception: Error in AVIFileOpen: -2147221164
at screen_R.AviWriter.OpenAVI(String fileName, UInt32 frameRate)

what is UI ? I don't understand

UI is User Interface.

I know, i meant explain about UI

Quote from Wikipedia -

In computing a graphical user interface (GUI, sometimes pronounced gooey,[1]) is a type of user interface that allows users to interact with electronic devices with images rather than text commands. GUIs can be used in computers, hand-held devices such as MP3 players, portable media players or gaming devices, household appliances and office equipment . A GUI represents the information and actions available to a user through graphical icons and visual indicators such as secondary notation, as opposed to text-based interfaces, typed command labels or text navigation. The actions are usually performed through direct manipulation of the graphical elements.[2]
The term GUI is historically restricted to the scope of two-dimensional display screens with display resolutions capable of describing generic information, in the tradition of the computer science research at the Palo Alto Research Center (PARC). The term GUI earlier might have been applicable to other high-resolution types of interfaces that are non-generic, such as videogames, or not restricted to flat screens, like volumetric displays.[3]

thanks