Using DVD-R which has worked for me before (both DVDV and DSOTM). There are no files in the VIDEO_TS dir, so the disk is MLP only. I also notice that there is no AUDIO_SV file which I see on other DVDA disks.

HH1 Photo 34. 598DP, 504, 518, 561(M), DSP5000, DSP33C, DSP33
2nd Room: 541, 555