Quote
Go to Player Settings > Video, Audio, Subtitles and then click the More Audio Settings button. Check if the "Exclusive audio output" option is selected. If it is, deselect it.
Dave
Already tried that. Sadly, that makes no difference.
To recap:
1) The same LPCM stream plays fine when muxed inside an m2ts container;
2) when played from an .mkv, however, PowerDVD reports 'unknown audio format' on the same LPCM stream, but
ONLY when muxed together with a 4K video stream.