Failure to load (pre-scan) a DVD

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bugdude
Posts: 6
Joined: Mon Dec 13, 2021 4:48 pm

Failure to load (pre-scan) a DVD

#1 Post by bugdude » Mon Dec 13, 2021 4:59 pm

Hello,

I have been working with MakeMKV for some time but ran into a DVD it fails to prescan. It says both cellwalk and celltrim methods fail. The DVD is a music DVD (BIG Country the Ultimate collection). This is the debug log output produced when I try to load the disk.

MakeMKV v1.16.5 win(x64-release) started
Debug logging enabled, log will be saved as C:\Users\cookie/MakeMKV_log.txt
Using direct disc access mode
DEBUG: Code 10551302 at 4pWR=_,=xe/mE')d:213142496
DEBUG: Code 0 at 4pWR=_,=xe/mE')d:121274998
DEBUG: Code 0 at \I*`gZL'~Esla,{fDv:29394229
CellWalk algorithm failed (structure protection is too tough?), trying CellTrim algorithm
Fake cells occupy 88% of the title - assuming fake title
Failed to open disc

IFO FILES
Big Country - Ultimate Collection.zip
(85.38 KiB) Downloaded 201 times
I tried using both protection removal methods manually rather than using auto selection but both failed with similar results.

Any idea what I could do for this ?

A very old IFO parsing tool I have shows this information for the DVD when it parses the IFO files, so they do not seem to be completely impassable.
BigCountry-TIP IFO parser.jpg
BigCountry-TIP IFO parser.jpg (68.4 KiB) Viewed 3514 times

bugdude
Posts: 6
Joined: Mon Dec 13, 2021 4:48 pm

Re: Failure to load (pre-scan) a DVD

#2 Post by bugdude » Thu Dec 16, 2021 1:43 pm

I was ultimately able to process this DVD using manual loading of the DVD, but I am still curious why it failed to load.

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