Kodi crashes systematically (4K file / RPi 4)

There are some known issues with seeking with TrueHD.

No solution (but it seems a bit random so some configurations get hit more than others).

See: https://github.com/xbmc/xbmc/issues/16096

It's not that there's no interest, it's just something that's proven difficult to resolve (there are multiple attempts). RPi4 doesn't use MMAL decoding these days, so that's only applicable to older RPi devices and older LE/Kodi releases.

Quote from elvanor

Ok, bug is about 3 year old, so I guess there is not a lot interest in fixing it (too bad, given it is easily reproductible).

On the bug page, someone mentions disabling MMAL acceleration avoids the issue. How do you disable this acceleration (and is it even feasible on RPi 4)?

MMAL has gone. The bug appears to be a buffer overwrite (e.g. buffer allocated is smaller than amount written).

But they tend to have fairly random symptoms - often changing something unrelated (like disabling MMAL) may make the issue appear or disappear.

You could convert the truehd track to flac. They are both lossless so no difference.