This error is caused by Microsft default driver for webcam. I suggest you acquire the latest drivers from Asus Drivers and Download web page. Identify your computer model, select your operating system and download and install the files from the Webcam section. Also, you can go to Registry Editor (Start > regedit)> HKEY-LOCAL-MACHINE > SOFTWARE > Sunplus SPUVCb > VIDEOPROCAMP and to change VFlip value to 1. Another solution can be ManyCam. It is an application developed by ManyCam LLC that allows you to flip and rotate your camera output.