Hi, I've been reading as much as I can about the different dvd-r media and I'm still none the wiser, except that some play and some don't. I use to get DVD-R discs with the following signature. 00 42 00 00 01 40 C1 FD 9E D8 50 00 02 8A 0D 14 .B...@....P..... 88 88 80 00 03 54 44 4B 47 30 32 00 04 30 30 30 .....TDKG02..000 30 30 30 00 05 CC C0 00 00 00 00 00 00 00 00 00 000............. These discs played in just about every standalone player, nver had any problems or angry clients. Recently my supplier gave me a different looking disc (white on the inner rim) with the following signature. 00 42 00 00 01 40 C1 FD 9E D8 50 00 02 98 0C 13 .B...@....P..... 76 78 80 00 03 54 44 4B 47 30 32 00 04 30 30 30 VX...TDKG02..000 30 30 30 00 05 88 80 00 00 00 01 00 00 00 00 00 000............. The only difference I can see is the VX before TDK but, these disc will not play in anything other than a PC player. My main question is, what makes these disc play or not? is it this signature or is it the reflective layer? the die color is more or less the same. Is there anything in the way a disc gets burnt that will prevent a standalone player playing discs? I used ADVDInfo to get this, i also noticed that there is a shit load more info, is there any docs on this data? I convert VHS weddings to DVD (amongst other things) and this frightens me. How does one make sure the discs will play in ANY standalone player. I greatly appreciate any help you might offer. TIA, Tux-e-do