Seems like I just fell over an old problem again:
mkisofs: Implementation botch. Video pad for file VTS_01_0.IFO is -6
mkisofs: Either the *.IFO file is bad or you found a mkisofs bug.
Discussed in 2002:
http://www.mail-archive.com/cdwrite%40other.debian.org/msg03782.html
DVD layout created with some M$ tool (I can find out which if needed).
DVD plays fine elsewhere. I want to remaster it and copied files to hard
disk; unless there was an error copying the files (very unlikely)  the
files on DVD would have to be correct + functional. All files:
         96 2006-06-27 00:35:30 .
         48 2006-05-30 08:23:58 AUDIO_TS
        304 2006-05-30 08:23:58 VIDEO_TS
      65536 2006-05-30 08:23:58 VIDEO_TS/VIDEO_TS.BUP
      65536 2006-05-30 08:23:58 VIDEO_TS/VIDEO_TS.IFO
     655360 2006-05-30 08:20:07 VIDEO_TS/VIDEO_TS.VOB
      65536 2006-05-30 08:23:58 VIDEO_TS/VTS_01_0.BUP
      65536 2006-05-30 08:23:58 VIDEO_TS/VTS_01_0.IFO
 1024198656 2006-05-30 08:23:26 VIDEO_TS/VTS_01_1.VOB
 1024434176 2006-05-30 08:23:45 VIDEO_TS/VTS_01_2.VOB
  734255104 2006-05-30 08:23:58 VIDEO_TS/VTS_01_3.VOB