'W.E.' error saving

[schmadrian]

On a Mac.
Disc in perfect shape.

MakeMKV v1.9.5 darwin(x86-release) started
Optical drive "BD-RE MATSHITA BD-MLT UJ265 1.00d" opened in OS access mode.
The new version 1.9.7 is available for download at /download/
Using direct disc access mode
Loaded content hash table, will verify integrity of M2TS files.
File 00004.mpls was added as title #0
File 00008.mpls(2) was added as title #1
Title #00018.m2ts has length of 9 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00026.m2ts has length of 0 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00008.m2ts has length of 51 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00015.m2ts has length of 8 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00011.m2ts has length of 91 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00007.m2ts has length of 113 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00006.m2ts has length of 116 seconds which is less than minimum title length of 120 seconds and was therefore skipped
File 00016.m2ts was added as title #2
Title #00022.m2ts has length of 15 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00043.m2ts has length of 6 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00013.m2ts has length of 0 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00001.m2ts has length of 15 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00017.m2ts has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00002.m2ts has length of 12 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00037.m2ts has length of 1 seconds which is less than minimum title length of 120 seconds and was therefore skipped
File 00021.m2ts was added as title #3
Title #00020.m2ts has length of 9 seconds which is less than minimum title length of 120 seconds and was therefore skipped
File 00012.m2ts was added as title #4
Title #00019.m2ts has length of 6 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Operation successfully completed
Saving 1 titles into directory /Users/***/Movies/W_E
Error 'Scsi error - HARDWARE ERROR:TRACK FOLLOWING ERROR' occurred while reading '/BDMV/STREAM/00004.m2ts' at offset '15744368640'
Error 'Scsi error - HARDWARE ERROR:TRACK FOLLOWING ERROR' occurred while reading '/BDMV/STREAM/00004.m2ts' at offset '15744368640'
Failed to save title 0 to file /Users/Schmadrianville/Movies/W_E/W_E_t00.mkv
0 titles saved, 1 failed

[Woodstock]

This is the key here:

Error 'Scsi error - HARDWARE ERROR:TRACK FOLLOWING ERROR' occurred while reading '/BDMV/STREAM/00004.m2ts' at offset '15744368640'

Your drive is having problems following where the data track goes. This can be because of deliberate errors put into the disk, or a manufacturing defect on the disk. And it can even be because of a scratch too small to see in exactly the wrong place.

If it is a new disk, I'd return it for replacement, hopefully with one that isn't from the same manufacturing batch. If it isn't, I'd clean it.

[schmadrian]

Thanks.

Is it odd that the three other files were copied over just fine?

[Woodstock]

The three other files were... three other files. They are on different parts of the disk. When trying to read this particular file, the drive read an instruction to seek to somewhere on the disk that it could not find. It looked around for a bit trying to find the track, but it couldn't follow it.

Sometimes, this is deliberate, part of the manufacturing process to make a disk "copy resistant", because there is a part of the disk that can't be read, so it can't be copied, and if that area can be read, it's an illegal copy.

Sometimes the process of pressing the bits into the disk isn't quite right, and the disk is defective.

Sometimes the drive itself is an issue.

The only thing MakeMKV can do in any of these circumstances is ask the drive to try again. It will do this up to 5 times by default. You can set it to retry more (or fewer) times under Preferences->IO.

[schmadrian]

Once again, thanks for your generously full response.


S/