threads get nicer and new version is ready in the svn

you can check that out like this :
svn co https://qtv4lcapture.svn.sourceforge.net/svnroot/qtv4lcapture qtv4lcapture

and here is an example output

btw I check it with some tv card and someother webcam of mine it looks pretty nice. no sound yet I am not sure to implement that stuff.