Video quality is a personal thing. If you are little more specific as to what is wrong, members may have more to go on.
As for skipping and not playing, that could be attributed to a burning software and DVD media, also make sure that the burner has a latest firmware as that will determine burning quality of new media.
For burning most of us use ImgBurn(free), for DVD media, Verbatim or Tayio Yuden is reliable.
Try to play DVD on your computer, if that one does not skip, than most likely a media is a problem.
Not all stand alone players will play all brands.