1) 99% the problem is with DVD authoring. Just compare IFO/BUP files Nero recorded with the original one. I can bet they are patched. I still did not get response from you - did you patch IFO/BUPs files before recording or did you just copy them AS IS (no modifications).
2) Sill need information about ISO image recording. Can you check grab logs - did there any problems with reading? Of course IFOs cannot contain only zeros.
W/o 1) and 2) results I can only GUESS and I would not do this.
Sam wrote:
I've successfully enable DVD+R DL "compatible" mode by calling SetDVDPLUSRSComaptibleMode, but the problem still exist. And I've tried to grab the movie into ISO using starburn, but I found some IFO file is all zero. So I didn't burn it to DVD+R DL.
I think the problem may be caused by incorrect LBA info. But it's strange the dvd burned by Nero using the same DVD files can be played normally on dvd player. I'll find some tools to compare the DVD burned by Nero with the DVD burned by StarBurn.
anton, is there any special in a DL disc? where will layer 2 start?
numen, do you have the same problem when play the burned DL disc?