Camcorder night vision digital

Hello, You can use VLC or QuickTime for video editing, I use Magix.
I hope I've helped you :-)

The nightvision works only in dark when theres no light otherwise the screen will go clearwhite because overlighting

This kind of issue is usually caused by the night vision mode of the camera being switched on.
In some cases, the cause may be more than just the night vision being turned on but just to be sure, it is advised that you turn of any function that has to do with the night vision feature.
These features may range from the night vision mode itself and then to the night vision lighting.
Hope this was helpful?

After powering it on ... hold the Delete key down.

I do not believe XM2 or GL2 does not have night vision mode. You may achieve little using video gain control. We all know Sony has the night vision modes which have been popular feature. James

May be a stupid suggestion but check the slide lock on the cartridge to make sure it is in the record position. 
'Night vision' is a term applied too loosely; it originally referred to the original 'starlight' scope that uses a special tube capable of actually amplifying light particles (photons).  More recently, the phrase has been applied to devices capable of 'seeing' into the infra-red spectrum. Since too much IR sensitivity affects the quality of any digital camera, the sensors are normally designed to be less sensitive to that wavelength.
The fact that none of the specifications mentions the minimum usable light level is bothersome. Most digital cameras (and camcorders) have 2-3 lux ratings which is not in the category of 'night vision' at all.   

did you ever find a solution to this problem ?

ccd might be faulty. check with a service centre.

Yes it does have night vision. The footage is great but right now I am having problems with sound. I have had this camera for about three years now and last year lost sound. I