Can I enable better diagnostics?

[twylo]

I'm attempting to rip a DVD-R that someone gave me containing six episodes of an Anime TV series. The surface looks pristine, but it definitely has some kind of issue, because I originally tried just using Handbrake to encode to MKV, and two of the episodes had encoding errors. Fine, I decided to try MakeMKV, which I've used very successfully in the past to encode my own Blu-Ray discs without issue.

Unfortunately, the process just stops dead half-way through, after reading about 2GB off the disc. There is literally nothing interesting in the log file, or in stdout from the process. No indication of anything going wrong, no status. I've let it sit for three hours and it didn't read another byte. The entire log file is here:

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$ cat ~/MakeMKV_log.txt 
Debug log started at Thu Aug  1 19:45:15 2024 , written by MakeMKV v1.17.7 linux(x64-release)
001005:0000 MakeMKV v1.17.7 linux(x64-release) started
001004:0000 Debug logging enabled, log will be saved as file:///home/twylo/MakeMKV_log.txt
Using 262272KB for read cache.
Network access is ENABLED, CURL version 7.81.0/OpenSSL/3.0.2/1.43.0 (x86_64-pc-linux-gnu) , proxy server not set.
001003:0020 DEBUG: Code 0 at WiSTJN@NTi\2-7W_9]X!>f:29393631
SDF  v098: ASUS_BW-12D1S-U_E401_OFDL058112WL
SDFW: PIONEER_SET_SPEED Asked=5120 SelectedMode=QUIET
SDF  v098: ASUS_BW-12D1S-U_E401_OFDL058112WL
001011:0000 Using LibreDrive mode (v01.0 id=254241351BCB)
SDFW: PIONEER_SET_SPEED Asked=5120 SelectedMode=QUIET
005072:0000 Backing up disc into folder "file:///home/twylo/MakeMKV_Backups/1-6.iso"
Launching /usr/bin/mmgplsrv
SDFW: PIONEER_SET_SPEED Asked=101376 SelectedMode=PERFORMANCE
001003:0020 DEBUG: Code 0 at WiSTJN@NTi\2-7W_9]X!>f:29393631
SDFW: PIONEER_SET_SPEED Asked=101376 SelectedMode=PERFORMANCE
SDFW: PIONEER_SET_SPEED Asked=101376 SelectedMode=PERFORMANCE
SDFW: PIONEER_SET_SPEED Asked=101376 SelectedMode=PERFORMANCE
SDFW: PIONEER_SET_SPEED Asked=101376 SelectedMode=PERFORMANCE
SDFW: PIONEER_SET_SPEED Asked=101376 SelectedMode=PERFORMANCE
SDFW: PIONEER_SET_SPEED Asked=101376 SelectedMode=PERFORMANCE
001003:0020 DEBUG: Code 1 at 3-T$VrFG=vho3:29395770

That's where it ends. It tears through the first half of the disc just fine, but then just stops. Nothing interesting in dmesg, either. No I/O errors.

Here's the Info MakeMKV gives me.

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Drive Information
OS device name: /dev/sr0
Current profile: DVD-ROM
Manufacturer: ASUS
Product: BW-12D1S-U
Revision: E401
Serial number: OFDL058112WL
Firmware date: 2013-09-10
Bus encryption flags: 1B

LibreDrive Information
Status: Enabled
Drive platform: RS8600
Firmware name: PIONEER BDR-209
Firmware type: Original (unpatched)
Firmware version: E401/ID44
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

Disc Information
Label: 1-6
Timestamp: 2024-04-04 11:50:54
Data capacity: 4.24 Gb
Disc type: DVD-R
Disc size: 120mm
Number of layers: 1 (PTP)

Is there anything else I can do to get more debugging info out of MakeMKV?

[twylo]

Just a quick update:

Honestly, this disc is just trash. I've tried a number of different things, including using ddrescue to make an ISO image (successful!) and then using MakeMKV to grab the six titles from the ISO image, but there are mastering errors GALORE. Handbrake makes better progress using the ddrescue ISO image, but still has dropped frames in at least one of the videos it produces. Whoever made this DVD-R did a terrible job, and they should feel bad. There realistically isn't anything MakeMKV can do about it, so I think this thread can probably just be closed.