Apart from the bit with the horizontal lines, that's weird.
These "lines" can be seen throughout the video in episodes of horizontal motion. It somehow looks like interlacing artifacts to me, although a) the lines are too thick for that and b) I thought the days of interlacing were long gone. Still, I'm hoping for these lines to be artifacts of the transcoding process when the video was prepared for youtube. If so, I'm quite sure they won't be on the DVD.
Yeah, I thought it was coming from the strobe at first but it doesn't look like interlacing lines to me. These are across the whole screen where the artefacts from interlaced footage only shows up where there's motion. We'll see I guess!