I understand in some way the other two reviews but I think they are unfare. The quality is fine, the sound is fine. Of course, it could be better in this days of HD and so on but, and this is a BIG but: Why do you care so much about the picture quality in a Yoga DVD? The sound is ok, the picture quality is fine, so I don't see any problem here.
The most important thing is the instructor quality and I can say for my years experience in yoga that this is far THE BEST dvd of Ashtanga Yoga in the Market. The instructions are clear, he is an EXCELLENT teacher and for me this is what matters.