I've copied a VHS video to DVD using an LG RC299H (combined DVD and VHS player/recorder). I burnt to a DVD-R disc (tried two different brands, Philips and Verbatim). The DVD plays fine on the LG DVD-player, but my PC/laptop think the disc is empty. I've tried 3 different laptops, and it's the same with all 3. The file-format the LG burns to is supposed to be DVD-Video, playable on "any DVD player"... How can I play this DVD on a PC? Thanks.