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After that unusual event, I did clean the disc (again) and copied it again using another drive, a Pioneer model. This produced the exact same results: same failure to load content hash table, and the copied files were identical in both copies as verified by comparing hashes using the utility hashdeep.

I backed up a UHD disc, apparently successfully. But at the beginning of the process MakeMKV 1.17.8 reported that it could not load the content hash table and skipped those files. No errors after that. The backup finished. The copy seems fine based on spot-checking it by playing various playlists. W...

It would be easier to debug this if you were first copying the DVD as DVD files, not immediately converted to MKV files. Then you could get an ffprobe report for the VOB files to check the first copies. You might try ffprobe on the relevant VOB files as they exist on the DVD before copying.

What happens if you use MKVMerge (in the MKVToolNix package) to create the MKV file from the relevant VOB files?

Your drive is a 212 type that is named 209 and mainly sold as an IOData in Japan? Isn't it. It needs to be flashed to be UHD capable. Check your PM and then use the Pioneer 212 utility. Thanks, got it. But first, how certain do we need to be about this model and the corresponding flashing software ...

This is regarding a Pioneer BDR-209MBK. MakeMKV 1.17.8 Info: Drive Information Manufacturer: PIONEER Product: BD-RW BDR-209M Revision: 1.53 Firmware date: 2019-03-07 Bus encryption flags: 1B Highest AACS version: 81 LibreDrive Information Status: Possible, not yet enabled Drive platform: Pioneer RS8...

Making a full backup with decryption of an undecrypted blu-ray image can be done. But getting MakeMKV to do it is ridiculously cumbersome, requiring extra steps in which complete copies need to be made. It should be much simpler, with fewer steps, and less re-copying of everything. Starting with an ...

Woodstock wrote: ↑

Mon Dec 30, 2024 10:06 pm

Is there a problem with the topic Ultimate UHD Drives Flashing Guide Updated 2024?

That thread is regarding UHD drives. The question did not mention working with UHD as a criterion.

In the source code, the "best recovery settings" sets the cluster size (number of sectors per block for large reads), not the sector size (number of bytes per sector, which is 2048 for optical discs). Line 3163 in the section you indicated is: self.cluster_size_choice.SetSelection(3) clust...

I see lots of questions asked over and over, and one reason for this is the lack of complete documentation. Is there any complete writeup about how MakeMKV works? For example, the commandline usage output mentions the source specification for discs: disc:<DiscId> - open disc with id <DiscId> (see li...

I do not see how to do a full backup using that approach. I can extract anything from the blu-ray image (which is still encrypted, originally created via ddrescue) to files and folders. And can copy from/to that directory tree to include "discatt.dat". The procedure usually discussed is to...

That specific part of the workflow, making use of discatt.dat for a full decrypted backup from a disc image, is the ambiguous part. I do have the discatt.dat file, and am familiar with using the partial, undecrypted backup from MakeMKV together with the full BDMV copied from elsewhere, but only to s...

If you have the disc, just use it to create the decrypted backup. In my message I began with, "I am testing the recovery of imperfect discs...." I did mention ddrescue. That means a direct copy that does not begin with using MakeMKV to decrypt. How are people using disc images (often desc...

I am testing the recovery of imperfect discs and working with optical disc images, but have not gotten MakeMKV to work with disc images. For example, using a good and new blu-ray, I created an undecrypted copy of it using ddrescue. No errors. The optical drive is LibreDrive enabled, and I first ran ...

To handle errors properly, you should flash the LG drive with ASUS firmware. Discussed in other threads. The best way to extract good data from imperfect discs is with ddrescue, which operates at the sector level instead of file level. You can run it in multiple passes using different copies of the ...