I have noticed a strange video artefact in my footage. Sometimes it has kind of soft and wide horisontal lines similar to what you can see when you film a tv set. I can't see that in camera's lcd, so it is really annoying when you notice it only when it is captured to my mac. :T HV20 is my first camera and i don't have enough experience to find the couse of my problem. Here is the sample footage with this problem: http://hv20.info/yopu/video_artefact.mov. It is just a 2.5Mb file.

It would be very helpful if more experienced users could point the reason of this artefact. I don't think that my hv20 is faulty, because i see this artefact just in some footage, not all. I guess something is wrong with camcorder settings. Thanks.