Downton Abby, Season 2

[MakOwner]

I have reported this before, and while I don't think this is from makemkv, I think it's from the underlying dvd libraries, I'm hoping someone knows of a work around.

This is the error I see when using dvdbackup on these disks:

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libdvdread: Elapsed time 0
*** Zero check failed in /build/buildd/libdvdread-4.2.0/src/ifo_read.c:574
    for vmgi_mat->zero_6 = 0x0000000900000000000000000000000000000000000000000000000000000000
DVD-Video information of the DVD with title DOWNTON_ABBEY_S2_D2

makemkv errors:

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MakeMKV v1.7.9 linux(x64-release) started
Debug logging enabled, log will be saved as /home/dale/MakeMKV_log.txt
Using direct disc access mode
Title #0 was added (9 cell(s), 1:06:58)
Cells 8-end were skipped due to cell commands (structure protection?)
Title #2 was added (6 cell(s), 0:53:00)
Title #3 was added (6 cell(s), 0:53:17)
Title #4 has length of 5 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #5 was added (1 cell(s), 0:25:05)
Title #9 has length of 5 seconds which is less than minimum title length of 120 seconds and was therefore skipped
DEBUG: Code 10551311 at ~u2`1]m17#]'S!5):213137712
DEBUG: Code 0 at ~u2`1]m17#]'S!5):213138885
DEBUG: Code 0 at ,'M,S*u#`2|XV> 0'<:29394597
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 12-12 were removed from title end
Title #10 was added (10 cell(s), 0:54:23)
Cells 2-end were skipped due to cell commands (structure protection?)
Cells 2-end were skipped due to cell commands (structure protection?)
DEBUG: Code 233 at cAV6A1v3X+j5kQG7P8uioyvy:0
Operation successfully completed
Saving 5 titles into directory /home/dale/Videos/DOWNTON_ABBEY_S2_D1
AV synchronization issues were found in file '/home/dale/Videos/DOWNTON_ABBEY_S2_D1/title00.mkv' (title #1)
AV sync issue in stream 1 at 0:00:39.039 with duration of 31ms : short audio gap was removed, audio skew is -31ms
AV sync issue in stream 1 at 1:06:59.071 with duration of 41.733ms : audio gap - 1.304 missing frame(s)
AV synchronization issues were found in file '/home/dale/Videos/DOWNTON_ABBEY_S2_D1/title01.mkv' (title #2)
AV sync issue in stream 1 at 0:53:01.888 with duration of 57.433ms : audio gap - 1.794 missing frame(s)
AV synchronization issues were found in file '/home/dale/Videos/DOWNTON_ABBEY_S2_D1/title02.mkv' (title #3)
AV sync issue in stream 1 at 0:53:16.993 with duration of 1.8ms : short audio gap was removed, audio skew is -1.8ms
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_03_1.VOB' at offset '16750592'
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_03_1.VOB' at offset '16750592'
DEBUG: Code 0 at =)!xW$2GLc_`Gko{:2#/:121262739
DEBUG: Code 0 at 5}AqwEuLWF30qg/,!9.:121261681
DEBUG: Code 0 at =)!xW$2GLc_`Gko{:2#/:213130743
DEBUG: Code 8179 at =)!xW$2GLc_`Gko{:2#/:29393332
DEBUG: Code 0 at DGPg)}\ ZD(qEhxu:QZ\z:29398300
DEBUG: Code 0 at qp]sTx~5o-;gx)$t<Uw:121263935
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_03_1.VOB' at offset '16750592'
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_03_1.VOB' at offset '16750592'
DEBUG: Code 0 at =)!xW$2GLc_`Gko{:2#/:121262739
DEBUG: Code 0 at 5}AqwEuLWF30qg/,!9.:121261681
DEBUG: Code 0 at =)!xW$2GLc_`Gko{:2#/:213130743
DEBUG: Code 8179 at =)!xW$2GLc_`Gko{:2#/:29393332
DEBUG: Code 0 at DGPg)}\ ZD(qEhxu:QZ\z:29398300
DEBUG: Code 0 at DGPg)}\ ZD(qEhxu:QZ\z:29398300
DEBUG: Code 0 at DGPg)}\ ZD(qEhxu:QZ\z:29398300
LIBMKV_TRACE: Exception: Error while reading input
Failed to save title 3 to file /home/dale/Videos/DOWNTON_ABBEY_S2_D1/title03.mkv
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '16613376'
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '16613376'
DEBUG: Code 0 at =)!xW$2GLc_`Gko{:2#/:121262739
DEBUG: Code 0 at 5}AqwEuLWF30qg/,!9.:121261681
DEBUG: Code 0 at =)!xW$2GLc_`Gko{:2#/:213130743
DEBUG: Code 8112 at =)!xW$2GLc_`Gko{:2#/:29393332
LIBMKV_TRACE: Exception: Error while reading input
Failed to save title 4 to file /home/dale/Videos/DOWNTON_ABBEY_S2_D1/title04.mkv
3 titles saved, 2 failed

[setarip_old]

H!

Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '16613376'
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '16613376'
LIBMKV_TRACE: Exception: Error while reading input

The above indicates an unreadable (damaged or dirty) disc.

Try carefully examining the disc for physical damage and then try (re)cleaning it.

If the problem persists, return the disc to the place of purchase in exchange for a new one...

[MakOwner]

H!

Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '16613376'
Error 'Scsi error - MEDIUM ERROR:UNRECOVERED READ ERROR' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '16613376'
LIBMKV_TRACE: Exception: Error while reading input

The above indicates an unreadable (damaged or dirty) disc.

Try carefully examining the disc for physical damage and then try (re)cleaning it.

If the problem persists, return the disc to the place of purchase in exchange for a new one...

I wish it were that simple, but I don't beleive that is the cause.
This happens on new, out of the box discs, and not just one.
Downton Abbey Season 2 has three discs, all three exhibit the same behavior.
I have posted on here before with some other movie titles where this happens.

The hardware functions just fine other media, both reading and writing, and although that could still be a possibility, with the volume of other media I author in this drive, I have my doubts.