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EdibleFungi wrote: ↑

Thu Jan 29, 2026 1:12 pm

So not giving out the correct VID is a "feature"?

Yes, I think so. MakeMKV's "hashed keys" database is private, and libmmbd only exists to integrate with libbluray-using applications like VLC etc. You'll probably find its aacs_get_mk() function is equally unhelpful...

So not giving out the correct VID is a "feature"?

..., hence why I'm certain libmmbd's implementation is incorrect. I think you'll find libmmbd is behaving exactly as designed. The problem is just that you are expecting its aacs_get_vid() function to return the disk's VID, whereas I think ...

... the same time (in sequence, one after the other, not both at the same same time ;) ) is just a case of using dlopen/dlsym, although i tried using libmmbd exclusively and the same issue arises, hence why I'm certain libmmbd's implementation is incorrect. Namely, on my code i do the libmmbd runtime ...

The result from libmmbd's aacs_get_vid looks like dirty memory. Library might be returning some stale memory instead of the correct value pointer (or a null pointer / null key if not valid). According to the source code, libmmbd's ...

The result from libmmbd's aacs_get_vid looks like dirty memory. Library might be returning some stale memory instead of the correct value pointer (or a null pointer / null key if not valid). 95 f5 54 0e 78 1b 42 44 cf fc 3e cd a5 ...

I am making a project using both libaacs and libmmbd. Ever since a MKBv82 disc failed to decrypt and noticing that a combination of the MKB tarball, libaacs (via aacs_info) and then makemkv could solve the issue together, I wanted to integrate ...

... I'm running into something that looks like a bug: some bdplus discs work totally fine when accessed through MakeMkv but not when accessed through libmmbd. When using the library (for example with vlc), the first part of the disc plays without issues but after some point (say 18 minutes), the result ...

... even if you only want to stream one title, which can take quite a while. I don't quite understand why it can't selectively parse on demand like libmmbd does when VLC begins a stream - maybe using VLC skips a step since it doesn't list the titles with their sizes and durations? Anyway, that's ...

... Application name MPC-HC Application version 2.6.0.0 Problem state Won't be fixed More info Problem 710544 Dump group 2665239 Dump 143754961 stack: libmmbd!aacs_set_fopen+0x15 libbluray!libaacs_open+0x15d libbluray!dec_init+0x1c1 libbluray!disc_open+0x2f5 libbluray!_bd_open+0x63 libbluray!bd_open+0x79 ...

... Application name MPC-HC Application version 2.6.0.0 Problem state Won't be fixed More info Problem 710544 Dump group 2665239 Dump 143754961 stack: libmmbd!aacs_set_fopen+0x15 libbluray!libaacs_open+0x15d libbluray!dec_init+0x1c1 libbluray!disc_open+0x2f5 libbluray!_bd_open+0x63 libbluray!bd_open+0x79 ...

... Application name MPC-HC Application version 2.6.0.0 Problem state Won't be fixed More info Problem 710544 Dump group 2665239 Dump 143754961 stack: libmmbd!aacs_set_fopen+0x15 libbluray!libaacs_open+0x15d libbluray!dec_init+0x1c1 libbluray!disc_open+0x2f5 libbluray!_bd_open+0x63 libbluray!bd_open+0x79 ...

... any restrictions, even if the recorded content has changed. Additionally, this AACS cannot be canceled using external functions such as libaacs or libmmbd, and aacsinfo also reports that it is an invalid AACS. Does anyone have any information?

... and VLC uses the one in the x86_64-linux-gnu directory (at least on ubuntu/linux mint). Deleted the other copy in /usr/lib. Helps to search for libmmbd to see where it might exist `find /usr/lib -name 'libmmbd.so.0'` Created symlinks, but for some reason only the one to libaacs exists currently. ...

... due to MakeMKV's ability to integrate with VLC: MakeMKV v1.14.0 (5.11.2018) Obsolete features: Removed UPNP streaming (Use VLC or Kodi with libmmbd instead) And this is great for watching discs on your computer, but streaming to other devices is neglected in this affair; in order to achieve ...