www.makemkv.com

• libcrypto.so.1.1 (OpenSSL)
• libdriveio.so.0
• libmakemkv.so.1
• libmmbd.so.0

xoocoon wrote: ↑

Sat Jul 02, 2022 11:32 am

Hi there,

I would like to share my insights on how to make makemkvcon work on the Open Source Media Center (OSMC). This also enables Kodi to play back Blu-Rays with an external USB drive.

OSMC is a Debian-based Linux distribution with Kodi as its main application. I use it on a Raspberry Pi 4B, but it is also available on the Vero 4K (among others). Regarding OSMC, the challenge is that it uses a 64-bit kernel but userland including Kodi is 32-bit. Basically, both 32-bit armhf and 64-bit arm64 executables work on OSMC.

Prerequisites:
For basic instructions on how to compile and use makemkv on Linux, see viewtopic.php?t=224.
Generally speaking, makemkv binaries for various architectures are contained in the makemkv-bin packages. An armhf version available in the post viewtopic.php?f=3&t=28533

Initial situation:
When executing the armhf binary of makemkvcon out of the box, the following error message appears:

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osmc@osmc:~$ makemkvcon info disc:0
...
Bus access error

This obviously comes from the attempt to use the 64 bit kernel module sg from a 32 bit executable. sg stands for SCSI generic and is the SCSI kernel interface makemkv uses for accessing Blu-Ray / DVD devices in a low-level generic way.

Approach:
Step 1.: As a basic strategy, we need to make the arm64 binary of makemkvcon work so that it can make use of the 64-bit kernel module sg. It also requires the libraries libdriveio.so.0 and libmakemkv.so.1 in an arm64 version. Step 2.: In the next step, we need an 32-bit armhf version of libmmbd.so.0 so that Kodi can dynamically integrate it when playing Blu-Rays.

Step 1:
To be able to execute the arm64 binary of makemkvcon on OSMC we need to install some basic arm64 libraries which are not available in the standard image of OSMC.

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sudo apt install libc6:arm64 libstdc++6:arm64 libssl1.1:arm64 zlib1g:arm64 libexpat1:arm64 libavcodec58:arm64

After that, executing the arm64 binary of makemkvcon might yield something like:

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osmc@osmc:~$ makemkvcon info disc:0
...
makemkvcon: error while loading shared libraries: libmakemkv.so.1: wrong ELF class: ELFCLASS32

This is the case when you compiled makemkv-oss in an armhf version. So we need arm64 versions of the libraries libdriveio.so.0 and libmakemkv.so.1. While it is possible to cross-compile makemkv-oss for arm64, I did this on a separate installation of 64-bit Raspberry OS to not screw up my OSMC installation. Then you need to copy the compiled libdriveio.so.0 and libmakemkv.so.1 files to /usr/lib/aarch64-linux-gnu on OSMC. Then executing

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makemkvcon info disc:0

should work.

Troubleshooting:
You might encounter the following message.

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osmc@osmc:~$ makemkvcon info disc:0
...
makemkvcon: /lib/aarch64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by /lib/libmakemkv.so.1)

This error comes from different Debian versions: Debian bullseye uses glibc 2.29 whereas Debian buster uses glibc 2.28. So in the above case, you have two options: Either upgrade to the new (experimental) bullseye port of OSMC (see https://discourse.osmc.tv/t/testing-deb ... seye/93054). Or you need to compile libdriveio.so.0 and libmakemkv.so.1 on Debian buster, i.e. with glibc 2.28.

Step 2:
To enable Kodi to play back Blu-Rays, copy the 32-bit file libmmbd.so.0 to /usr/lib/arm-linux-gnueabihf on OSMC.
Then symlink this file to libaacs.so.0 and libbdplus.so.0:

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sudo ln -s /usr/lib/arm-linux-gnueabihf/libmmbd.so.0 /usr/lib/arm-linux-gnueabihf/libaacs.so.0
sudo ln -s /usr/lib/arm-linux-gnueabihf/libmmbd.so.0 /usr/lib/arm-linux-gnueabihf/libbdplus.so.0

I hope this helps others who try to make blu-ray playback work in OSMC.