Not fake. “It occurs because its CMOS sensor captures video one line at a time, so there's an increasing lag as it scans down the frame. This 'rolling shutter' effect of movement being displaced across each frame can also be seen in DSLR-shot movies. In this case the video has been rotated, so the effects of that delay run left-to-right, giving interesting (and pretty) jagged effects, particularly on the bottom 'E' string.”

Mega fake.

fake and gay

Possibly fake but all of you need to realize that nylon acoustic strings visibly oscillate more than steel strings

Its just way to easy to fake that.

at the :11 mark and the 3:13 mark are two obvious signs of an edited video

fake

not sure if believe. tests with my iphone and bass inconclusive since its an octave+ lower. i have my doubts.

I'm going to try this next time I have my acoustic guitar with me. I'll then post it to show what my camera does. Looks pretty cool regardless though.

FAAAAAKKKEE!
If you can't see that from outside of the guitar, what makes you think you could see it from the inside?