FmX

Hello guys today i installed 1 IR camera with easycap usb dvr for home secrity. I have a problem when camera switching to night vision. When switch to night vision signal lost after few seconds, but if records in this time i can see what is happening in my .avi file. With two words my problem is that i cant see in real time what is happening, but recorded file is ok recorded with black and white colors. Need some help if my problem is in usb captcher or in my camera ?