www.makemkv.com

Okay, I think I've gotten to the bottom of it. BD+ discs work properly with libmmbd in 1.15.4. That version used shared memory to communicate between libmmbd and makemkvcon. Later versions (checked 1.16.7, 1.17.7, and the current 1.18.4) switched to using pipes for that communication. In the process ...

I ran into this today with MakeMKV 1.18.4 (haven't tried older versions, yet).

After some testing, the issue seems to happen exactly when playback crosses the 4GiB point in a clip. For the first 4GiB of the clip, bdplus_fixup works perfectly. After that, it erroneously wraps and starts applying the ...

Disc type: UHD
Disc ID: 0x33A67E13166DFDD235B4FBA53954B802C7DDDE12
Disc dump filename: MKB20_v66_Game_Of_Thrones_Season_3_Disc_4_3ABF.tgz
Drive: BP50NB40
Drive firmware: BP60NB10 1.02
LibreDrive status: Enabled
Did you sync the public keydb within the last 15 minutes? Yes
Have you verified ...

Disc type: UHD
Disc ID: 0x6A6BA2CEA1DC5B66E7C48E7D0F6F41C0C8A3C3D0
Disc dump filename: MKB20_v61_Game_Of_Thrones_Season_1_Disc_4_9C7F.tgz
Drive: BP50NB40
Drive firmware: BP60NB10 1.02
LibreDrive status: Enabled
Did you sync the public keydb within the last 15 minutes? Yes
Have you verified ...

Disc type: UHD
Disc ID: 0xF302EDF97D4F369AB1B62EA9E89A4C6CC4280D5C
Disc dump filename: MKB20_v61_Game_Of_Thrones_Season_1_Disc_1_02CD.tgz
Drive: BP50NB40
Drive firmware: BP60NB10 1.02
LibreDrive status: Enabled
Did you sync the public keydb within the last 15 minutes? Yes
Have you verified ...

In case it's useful for anyone else, the following commands can be used to generate a list of shots from an RPU, which can be used to verify synchronization.

First, convert the RPU to json:

dovi_tool export -i RPU.bin -o RPU.json

Second, use jq to get a list of frames that have the scene ...

Thanks! That's really helpful. I ended up doing

mpv --vo=gpu-next --target-trc=pq --target-prim=bt.2020 bd://mpls/800 --bluray-device=[path to blu-ray folder]

in one maximized window and

mpv --vo=gpu-next --target-trc=pq --target-prim=bt.2020 [path to DV MP4]

in another.

That way I could ...

Is there a good way to spot check whether a DV P5 video base layer and an HDR10 video have the same (or similar enough) light levels for the metadata to be compatible for the hybrid maker functionality?

If I have a profile 5 DV video with a 2.40:1 aspect ratio, is there any way to prevent the dark gray bars added by the x700 from changing brightness in response to the DV data? I don't think I'd mind the bars being dark gray by itself, but the flickering is distracting. (Short of reencoding the ...

Okay, another couple of questions. First, I've seen reference to converting P5 to P8 to create "hybrid" streams using the HDR10 BL from the UHD blu-ray combined with the Dolby Vision data available via streaming. Is this ~always the best approach where possible, or are there cases where the blu-ray ...

For movies with neither a Dolby Vision track nor HDR10+ metadata to convert, how much of a difference am I likely to notice on an LG C1 between auto-generating shot-by-shot metadata versus just playing it back with static metadata? Is it more likely to make a difference in a brighter room (so Dolby ...

check the spreadsheet in my signature.


*** I think I found an issue with the x800m2:

1- DTS-HD 2.0 plays only as lossy DTS (core)
2- DTS-HD 7.1 seems to always be out of sync about 2 frames (83MS) but strangely DTS-HD 5.1 is fine.


Thanks! That's helpful. Any idea whether those also happen ...

Is there a good summary of the current state of affairs with respect to playing back backups of discs with Dolby Vision? I'm new to this, having just upgraded to a Dolby-Vision-capable TV, and my searches seem to just drop me into the middle of this thread (or similarly-long threads on other sites ...

Hmm… after further checking, it appears the rip is good.

After doing another rip on a different drive with no reported errors, I ended up with a result that was bit-for-bit identical to the first one, so it appears the 9 reported read errors were all successfully retried in this case (though surely ...

When you do the backup option in MakeMKV, you need to start an encrypted backup (uncheck "Decrypt video files") in order to create a discatt.dat (not discattd.dat). There will not be a MAKEMKV folder.