Below is a dump from the log when i try to extract the main title from "Her". I love the film but the disc is one of about 7 which handbrake fails to work on directly. I use MakeMKV on my blu rays so had hoped for more success. Apparently not. The disc is in tip top condition, so dirt isn't the issue.
When i first examine the disc before deciding which track to extract, this is the log.Saving 1 titles into directory /Users/Justin/Documents/MakeMKVdata
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_12_1.VOB' at offset '22947840'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '22947840'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '22947840'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '22947840'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '22947840'
Error 'Posix error - Input/output error' occurred while reading '/dev/rdisk3' at offset '22947840'
DEBUG: Code 1073741829 at l.=[)p[_HFpS#)=V;6:121262969
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_12_1.VOB' at offset '22947840'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_12_1.VOB' at offset '22947840'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_12_1.VOB' at offset '22947840'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_12_1.VOB' at offset '22947840'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_12_1.VOB' at offset '22947840'
DEBUG: Code 100864261 at l.=[)p[_HFpS#)=V;6:121262969
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/VIDEO_TS/VTS_12_1.VOB' at offset '22947840'
DEBUG: Code 0 at Uqj@95l~5sd0]0 U<lCP:121263291
DEBUG: Code 0 at 2>j$%u5~dtfA/w{>8}Q:121261750
DEBUG: Code 0 at Uqj@95l~5sd0]0 U<lCP:213130812
DEBUG: Code 11205 at Uqj@95l~5sd0]0 U<lCP:29393286
DEBUG: Code 0 at K}wjAYQ,p'<kFY]]d6(,W:29398967
LIBMKV_TRACE: Exception: Error while reading input
Any ideas on what is causing this? The other films I have this same style of error with are listed below, and interestingly all have their titles between <> in Finder (I use OSX but the same is true on win8), e.g. <HER>Using direct disc access mode
Title #1 was added (20 cell(s), 2:06:01)
Title #3 has length of 226 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #4 has length of 873 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #5 was added (3 cell(s), 0:23:17)
Title #6 has length of 35 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #7 has length of 136 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #8 has length of 134 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #9 has length of 142 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #10 has length of 136 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #11 has length of 127 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #12 has length of 4 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #13 has length of 4 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #14 has length of 4 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #16/2 has length of 57 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #16/4 has length of 57 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
Title #16/16 has length of 57 seconds which is less than minimum title length of 1200 seconds and was therefore skipped
DEBUG: Code 10551299 at 3TJnoV[}nWrO?Gpc:213142128
DEBUG: Code 0 at 3TJnoV[}nWrO?Gpc:213143301
DEBUG: Code 0 at ,>R85^AJ|`w`llMFO*:29394229
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 15-15 were removed from title end
Title #19 was added (13 cell(s), 2:00:34)
DEBUG: Code 10551299 at 3TJnoV[}nWrO?Gpc:213142128
DEBUG: Code 0 at 3TJnoV[}nWrO?Gpc:213143301
DEBUG: Code 0 at ,>R85^AJ|`w`llMFO*:29394229
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 15-15 were removed from title end
Title #21 was added (13 cell(s), 2:00:34)
Title #29 was added (20 cell(s), 2:06:01)
Title #31 was added (19 cell(s), 2:02:02)
DEBUG: Code 10551299 at 3TJnoV[}nWrO?Gpc:213142128
DEBUG: Code 0 at 3TJnoV[}nWrO?Gpc:213143301
DEBUG: Code 0 at ,>R85^AJ|`w`llMFO*:29394229
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 15-15 were removed from title end
Title #33 was added (13 cell(s), 2:00:34)
DEBUG: Code 10551299 at 3TJnoV[}nWrO?Gpc:213142128
DEBUG: Code 0 at 3TJnoV[}nWrO?Gpc:213143301
DEBUG: Code 0 at ,>R85^AJ|`w`llMFO*:29394229
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 15-15 were removed from title end
Title #35 was added (13 cell(s), 2:00:34)
Title #39 was added (19 cell(s), 2:02:02)
DEBUG: Code 10551299 at 3TJnoV[}nWrO?Gpc:213142128
DEBUG: Code 0 at 3TJnoV[}nWrO?Gpc:213143301
DEBUG: Code 0 at ,>R85^AJ|`w`llMFO*:29394229
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 15-15 were removed from title end
Title #41 was added (13 cell(s), 2:00:34)
DEBUG: Code 10551299 at 3TJnoV[}nWrO?Gpc:213142128
DEBUG: Code 0 at 3TJnoV[}nWrO?Gpc:213143301
DEBUG: Code 0 at ,>R85^AJ|`w`llMFO*:29394229
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Cells 1-1 were removed from title start
Cells 15-15 were removed from title end
Title #43 was added (13 cell(s), 2:00:34)
Title #45 was added (19 cell(s), 2:02:02)
Title #47 was added (20 cell(s), 2:06:01)
Title 1 in VTS 12 is equal to title 1 and was skipped
Title 3 in VTS 12 is equal to title 1 and was skipped
Title 1 in VTS 15 is equal to title 1 and was skipped
Title 1 in VTS 15 is equal to title 1 and was skipped
Title 1 in VTS 15 is equal to title 1 and was skipped
Title 1 in VTS 15 is equal to title 1 and was skipped
Title 1 in VTS 15 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
Operation successfully completed
Color Purple
Hancock
Sin City 2
District 9
Vantage Point
Dark Skies