MakeMKVcon dependency libc6 version issue (used with VLC)

[Somewhat Reticent]

Today I tried to use MakeMKV to play a blu-ray disc with VLC. Nope. (DVD still plays.) Using method shown a couple years ago on LinuxCapable.
Terminal showed "no response from makemkvcon". and something about later version of libc6 expected (2.34?) but earlier version present (2.31?).
Can this be restored?

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I also use SMplayer/mpv, mediainfo, handbrake and LibreWolf.

[asqwerth]

You're using a 3rd party repo for makemkv from what I can see.

Maybe you should ask the providers of the repo why a repo they marked as bullseye is requiring a libc6 that is newer than that in Debian Bullseye? This is a core dependency that doesn't just get changed in a particular Debian release.

https://packages.debian.org/bullseye/libc6

[Somewhat Reticent]

Thanks for that clarity.
Would it make more sense to uninstall makemkv and that repository, and then use mxpi?

[asqwerth]

Best to uninstall and remove repo.

I'm not booted into mx and can't tell you if we have a version of makemkv.

[Somewhat Reticent]

If I uninstall makemkv and uncheck the repository in synaptic and reload, I don't see a listing for makemkv in synaptic.
MXPI shows only a flatpak (1.17.7), nothing in enabled repos, test, or backports.
VLC 3.0.21-0+deb11u1 is currently installed.

[Somewhat Reticent]

If I select the makemkv flatpak in MXPI five org.videolan.VLC.plugin.makemkv versions pop up - which, if any, should I use?
( Not a fan of flatpaks - is there a better way to fix this? )

[Somewhat Reticent]

Should I test on LiveUSB first?
( I suspect it's not as simple as installing a flatpak and plugin ...
else there wouldn't be such efforts to overcome dependency issues as those by third-party repositories ...)

[Somewhat Reticent]

Last snapshot apparently working dated 2024-SEP-29. Should I install from LiveUSB?
Note about repo emailed. ( Wonder if anyone's got these working on latest MX snapshot? )

[Somewhat Reticent]

No response to email. I suspect that repo isn't well-maintained. It's an apt PPA, and may be mostly aimed at Ubuntu.
The repo by mathias serves.
Tried on LiveUSB with 20241115 snapshot:
MakeMKV (1.17.7) installed. Dependency libmmbd listed but not installed - added. Beta key used for temporary registration.
MakeMKV preference option Integration applied. Menu not working yet - need to add java … found "Recommends" libbluray-bdj
VLC: audio working, video pixelated … avoid "hardware acceleration" … subtitle background not showing … (sigh ) always something …

[Somewhat Reticent]

I have two systems with bullseye-based MX installed - one NUC, one Studio Hybrid 140g. I use a portable top-load USB disc drive when working with a disc.
On both systems:
Removed makemkv, apt PPA & key. Added mathias' repo & key, installed makemkv(1.17.7) (added libmmbd0), libbluray-bdj; registered with beta key, set Integration/applied.
MakeMKV starts & runs OK; VLC starts but crashes (disappears) unless started w/o menu, SMplayer just crashes - for Blu-ray discs;
For DVD VLC starts OK but subtitles soon crash, or VLC subtitle display fails to overlay background to make style visible.
SMplayer gets stuck on menu, doesn't play movie/episodes. ( Could be OS wobbling off tracks - browser memory leaks ...)

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= (Sigh) An update isn't always an upgrade. Version 1.17.8-1~bpo11+1 resurrected a version mismatch between libc and makemkvcon.
I'm not convinced "root" should be required for installation; still suspect that broke subtitle style visibility settings.