I don't have a camcorder, so my opinion may not be worth much. But I've seen lots of sensor dust on my Canon 5D (worst was from photographing in a dust storm at White Sands, New Mexico -- hey, the camera's a tool to be used, right?).
All of my sensor dust has seemed much bigger and with much softer edges than your spots, and always dark, not white, so I suspect hot pixels. And when I enlarge your sample image, I see fine horizontal lines which look like scan lines (?), and your white specks seem to be consistently the same height as the distance between two 'scan' lines.
If your camera is still under warranty, I'd take it back for service or replacement. That's my take on it, but I hope someone with camcorder experience will chime in on this.