Too many ambiguities here. QC vs. QCM vs. Nano... and more importantly: there are distinct types of noise. I wouldn't call the noise in that video hum at all. It sounds more like a static charge. The last time I heard anything like that, someone here (was it
@Sascha Franck?) was describing a "zipper noise" he heard when moving his hand over his pickguard. This is the very first time I've heard of this problem being associated with QC or QCM.
The devil's in the details.