Is it because the V cam is changing the stickmen size and lenght ?
Don't forget to keep pressing Shift while stretching the Vcam, so it doesn't change.
I explain you. The Vcam is a rectangle. If you put it as a square, then the pic in the vcam zone will be stretched to enter in that square. Don't change any size of the Vcam and press Shift ! ;)
Edit, btw, if this is your rhg, don't spoil it like that and WRITE your problem instead of showing us the beginning ! ^^