[quote=“grahamh, post:10, topic:70231”]
Am I missing something? [/quote]
Yes - partially.
And - indeed - it does, just like most other Kodi platforms do. It will decode it to PCM or transcode it to Dolby Digital;
If you don’t transcode it or decode it to a format your AVR or TV supports it won’t work. AAC is not an audio format supported for bitstream passthrough over HDMI or Toslink/SPDIF. (For a while Kodi appeared to offer AAC passthrough - but this has never been supported by amps)
It’s like MP3, MP2, FLAC, OGG Vorbis etc. - a codec that isn’t part of an interconnect standard and needs to be decoded or transcoded.
The only audio formats that can be bitstreamed are : PCM, DD, DTS, DD+ (with and without Atmos), DTS-HD MA/HRA, DTS:x and Dolby True HD (with and without Atmos)
PCM 2.0, DD and DTS are also SPDIF bitstreamable (DD+ in some cases)
PCM multichannel, DTS-HD/DTS:x and Dolby True HD are HDMI only.
(WMA was bitstreamable at one point - but vanishingly rare…)
Anything else will need to be decoded or transcoded to a format that can be bitstreamed.
Hmm - I have no problems with TV Headend Freeview HD audio recordings on my Vero 4K.
Which of the two Freeview HD audio tracks are you playing? If you try and play the Mono 1.0 Audio Description feed (which “[aac] channel element 1.0 is not allocated”) may indicate you may have issues and only get silence. You should ensure you have selected the Stereo (or 5.1 if a 5.1 show) audio track.
In my TV Headend install the main programme audio is Track 1/2, the audio description mono narration only Track is 2/2.
Have you checked you are playing the right audio track?