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I have tried multiple times to save the DVD "RED 2" to MKV but it keeps failing

When reading the DVD the log has
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm



The MKV browser window shows 10 Titles with 6 Titles being around 6GB each.

If a two layer DVD holds 9.4 GB something does not add up.

I have tried cleaning the DVD with a microfiber cloth and verified the movies plays on my Blue ray player.

Any suggestions on how to trouble shoot or work around the error?

LOG FILE

Using direct disc access mode
Title #1 was added (24 cell(s), 1:58:29)
Title #2 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #3 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #4 has length of 22 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #5 was added (1 cell(s), 0:04:24)
Title #6 was added (5 cell(s), 0:04:25)
Title #8 has length of 22 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #9 has length of 10 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #10 has length of 112 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #11 has length of 66 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #13 has length of 112 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #14 has length of 66 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #20 has length of 5 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #21 was added (1 cell(s), 0:27:05)
Title #22 was added (1 cell(s), 0:26:50)
Title #25 was added (24 cell(s), 1:58:29)
Title #26 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #27 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #28 was added (21 cell(s), 1:46:02)
Title #29 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #30 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #31 was added (23 cell(s), 1:56:40)
Title #32 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #33 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #35 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #36 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #38 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #39 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #40 was added (21 cell(s), 1:46:02)
Title #41 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #42 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 20-20 were removed from title end
Title #43 was added (18 cell(s), 1:55:32)
Title #44 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #45 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #47 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #48 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 20-20 were removed from title end
Title #49 was added (18 cell(s), 1:55:32)
Title #50 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #51 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #52 was added (21 cell(s), 1:46:02)
Title #53 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #54 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #55 was added (24 cell(s), 1:58:29)
Title #56 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #57 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #58 was added (20 cell(s), 1:42:23)
Title #59 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #60 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #62 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #63 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 20-20 were removed from title end
Title #64 was added (18 cell(s), 1:55:32)
Title #65 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #66 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #68 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #69 has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #70 was added (23 cell(s), 1:58:04)
Title 1 in VTS 20 is equal to title 1 and was skipped
Title 1 in VTS 20 is equal to title 1 and was skipped
Title 1 in VTS 13 is equal to title 1 and was skipped
Title 1 in VTS 13 is equal to title 1 and was skipped
Title 1 in VTS 18 is equal to title 1 and was skipped
Title 1 in VTS 18 is equal to title 1 and was skipped
Region setting of drive HL-DT-ST:BD-RE BP50NB40 does not match the region of currently inserted disc, trying to work around...
Operation successfully completed
Saving 1 titles into directory /Volumes/Plex/Movies/_RED_2_BCDC
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Error 'Scsi error - ILLEGAL REQUEST:INVALID FIELD IN CDB' occurred while reading '/VIDEO_TS/VTS_20_1.VOB' at offset '10240'
Failed to save title 0 to file /Volumes/Plex/Movies/_RED_2_BCDC/title00.mkv
0 titles saved, 1 failed

RED2 is a Lionsgate release, and only one of the movie titles is real. The others are constructed out of multiple scenes, and sometimes just invalid areas of the disk, to cause problems similar to this. Which title is correct varies with where and when you bought the disk.

For Bluray, there is a way to figure this out in MakeMKV, with Java installed. I have not seen the same capability for DVD, although it must exist, because VLC and Handbrake (if you use a 3rd-party decryption library) usually pick out the correct title.

Hopefully someone that has RED2 on DVD can pop up with which title is the most likely one. Based on what is in the Wikipedia entry for RED2, this one has the correct length:

Title #31 was added (23 cell(s), 1:56:40)